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M.Eng. Students

Learn more about the current work being done by the Master of Engineering Students

Mukund_Ayalasomayajula head shot

Mukund Ayalasomayajula

Corporate experience 

MSE M.Eng. students can do an internship with a range of companies from small businesses to Fortune 500 companies. Universal Instruments is a global leader in the design and manufacture of advanced automation and assembly equipment solutions for the electronics manufacturing industry.

Sponsor

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Brady Bruno head shot

Brady Bruno

Reaction coordinates for multi-state ring polymer molecular dynamics

Deliverables: 

  • A reaction coordinate that agrees with Fermi’s Golden Rule in the inverted regime
  • Investigation of the dependence of rate constant on the choice of reaction coordinate
  • Computer simulations that incorporate improved approximations and/or alternative sampling protocols

Abstract:

Carbon dioxide is a major contributor to global warming and climate change. As a result, there is much research into different techniques to sequester, and even utilize, carbon dioxide from its many sources (i.e. combustion reactions, manufacturing, etc.). The objective of this project is to assess the economic feasibility of electrochemical reduction of CO2 via solid oxide electrolyzer cells (SOECs). This work will be done by approximating thermodynamic energy constraints and estimating operating costs, capital costs, and potential financial incentives.

Sponsor

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Prof. Nandini Ananth


 

Liao Chen Head shot

Liao Chen

Optical Characterization of Dielectric Films

Deliverables: 

  • Improve understanding in the optical properties of dielectric materials.
  • Find efficient method to evaluate optical indexes of materials
  • Apply data analysis skills into material science.

Abstract:

Improvement in thin film technology in 20th century has brought a great number of technological breakthroughs in many areas. As to apply this material to our life properly, it is important to characterize them and know their properties better. This project will involve developing techniques for characterization of the optical properties of dielectric thin films. We will use diffraction-grating spectrometer to collect reflectance data at various positions on a substrate; After gathering data, we will set up appropriate modeling to estimate the index of refraction and physical thickness, as well as obtain graphs for reflectivity with wavelength.

Sponsor

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Prof. R.B. van Dover

 



 

Emily Cheng head shot

Emily Cheng

Optimization of Ink Adhesion to Glass

Deliverables: 

  • Custom designed ink components using polymer engineering of organic chemistry
  • Completed extensive mechanical testing to investigate material properties of ink in preparation for material down selection
  • Completed market analysis of ink components to characterize ink chemical properties
  • Developed script for failure analysis image processing

Abstract:

In modern smartphones, the outward design of the external enclosure/back glass has become increasingly important. Consumers can distinguish phones and phone brands in a millisecond simply by examining the outside design of a phone. A key component of Apple’s success has been its recognition in popular culture, recognizability, and iconic design. The colored ink on glass that makes up the design of the back housing is critical to the overall appearance of the phone, and the delamination of the ink that occurs when the phone is dropped is a major concern for performance and user visual satisfaction. In working with the Materials Product Design team, I used polymer engineering and mechanical testing to custom design the ink chemistry and improve the adhesion of ink to glass.

Sponsor

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Nicole Chu head shot

Nicole Chu

FlexSurface/CCMR Jumpstart development of microsensors for air quality monitoring devices

Deliverables: 

  • Use CNF resources to Fabricate microelectrode and array devices on different substrates as microsensors
  • Test the performance of the microsensors to monitor air quality

Abstract:

Air pollution is a major problem that is not only dangerous to the environment but to the health and safety of humans. Due to the increase in air pollution in recent years many major health effects have occurred; these include increased cases of respiratory diseases, cardiovascular diseases, headaches, damage to liver, cancer and other health issues. As such there has become an increasing need for personal air quality monitoring systems. Current technology lacks the ability to detect chemicals with high sensitivity and selectivity, and is too expensive for home installation and personalized use. Microelectrode and array devices on various substrates will be the foundation of the microsensor technology needed to create cost efficient and size appropriate air monitoring sensors for individual and home use.

Sponsor

 

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Devinne Cullinane head shot

Devinne Cullinane

Mechanical property benchmarking of 3D-printed alloys

Deliverables: 

  • Publish Material Properties Data Sheets for Ti6Al4V, Inconel 718, Inconel 625 ,and AlSi10Mg produced with EOS, 3D Systems, and Renishaw printers
  • Develop test procedures to fill gaps in materials property data
  • Carry out builds, testing, and data analysis to fill in the missing material property data
  • Develop Incodema3D internal process for achieving material properties

Abstract:

The additive manufacturing industry is on the rise and especially new to the industry is metal alloy printing for production parts. Incodema3D is an additive manufacturing site focused on production parts using laser powder bed fusion and direct energy deposition techniques on 3D Systems, EOS, and Renishaw brand printers. These equipment manufacturers have published their own material properties data sheets, but they are not accurate enough to take into account the Incodema3D manufacturing work-flow, such as printing, post-processing, and heat treating of the parts on-site. Utilizing Incodema3D client data, we will be developing and publishing Incodema3D material properties data sheets that can be confidently shown to clients, encapsulating the entire work-flow.

Sponsor

 

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Xuanyi Ding headshot

Xuanyi Ding

Characterization of Pressure-Less Silver Sintering Joint

Deliverables: 

  • Paper reviews related to the field
  • Silver sintering materials under different conditions
  • Mechanical testing on these materials
  • Reliability tests including power cycling and temperature cycling test

Abstract:

It has been found that the silver sintering joints prepared under pressure-less sintering condition outperform the high lead solder and lead-free solders materials in terms of thermal cycling test. Understanding the reliability of pressure-less sintering materials is essential to improve the high temperature working condition materials such as hybrid cars and aircraft. Literature research will be conducted for a better understanding of silver sintering materials and the reliability tests. After understanding the theory behind the silver sintering and the test, the project will focus on the characterization of the silver sintering materials at different conditions. There are couple parameters that related to the quality of the sintering materials such as joint bondline thickness, temperature, voids and porosity, which is important for the manufacture. Moreover, the project will conduct power cycling test and temperature cycling test. At last, a table related to both properties and sintering conditions will be plot after these experiments for future reference.

Sponsor

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Yiming Dong head shot

Yiming Dong

Ultrasound transducer materials for biomedical flowsensors with a higher linearity than the PZT

Abstract: 

This project is to investigate potential piezoelectric materials to incorporate into Transonic flowprobes as low power resonant devices. The first semester work would focus on (a) researching the currently available breadth of transducers that would fit within Transonic technology and comparing key characteristics of the materials in terms of suitability for intended applications; and (b) identification of new materials that are being developed for similar applications and the potential impact for incorporation into Transonic devices.  The second semester would use the information gathered from the previous months to procure sample materials and characterize their response.  If suitable materials are available, full device production would be an ideal capstone to the 2 semester work. Use of piezoelectric modelling software may be used during evaluation.

Sponsors:

Professor Debdeep Jena
Prof. Debdeep Jena
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Jessica Elliott head shot

Jessica Elliott

Mechanical property benchmarking of 3D-printed alloys

Deliverables: 

  • Publish Material Properties Data Sheets for the following metal alloys:
    • Ti6Al4V
    • Inconel 718
    • Inconel 625 
    • AlSi10Mg

Abstract:

3D printing metal alloys is a cutting-edge manufacturing technology utilized by many engineering sectors, such as the aerospace and automotive industries. Incodema3D uses laser powder bed fusion technology to create complex 3D printed parts. This project aims to benchmark mechanical properties of their materials under various printing and post-processing conditions in order to give customers an accurate gauge of the material’s performance. We will first analyze and distill customer data in order to identify trends and locate missing information. Next, the gaps in data will be filled by designing specimens and performing tests on them. Finally, data will be collated into datasheets which Incodema3D can provide to customers.

Sponsor

 

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Jeffrey Gallagher head shot

Jeffrey Gallagher

Diamond Based Electron Beam Detector for the CBETA Accelerator

Deliverables: 

  • Schematic of Detector and Predicted Material Qualities
  • Prototype Diamond Detector
  • Electron Beam Halo Profile

Abstract:

Opposed to ring accelerators, the CBETA linear accelerator constantly accelerates the electrons in the beam. This reduces accuracy and affects the cross-sectional area, which can lead to the beam interacting with the walls of the beamline and producing radiation. The electron beam must be measured to ensure accuracy and safe usage; however, old beam detectors are problematic and falling out of favor. A new model of detector is to be implemented, using a diamond to interact with the beam, and then current flow from the diamond measured to determine the intensity and size of the electron beam.

Sponsor

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Qi Gao head shot

Qi Gao

New Curing Lamp Optimization as Determined by FTIR Measurement Analysis

Deliverables: 

  • FTIR measurement repeatability and its influence on degree of cure data for cure performance characterization
  • Optimal manufacturing parameters explored for future utilization of new curing lamps
  • Improvement in design of experiment for curing lamp optimization

Abstract:

Optical fiber is used as a medium for telecommunication and computer networking, especially for long-distance communications because light propagates through the fiber with much lower attenuation compared to electrical cables. UV curing lamp is widely used in the manufacturing of optical fibers and the cure performance determines critical properties of coating layers that can protect the optical fibers from moisture and external damage. These optical fiber coating layers are applied during the fiber draw, where curing lamps are used to cure each coating layer subsequently. Cost-effective curing lamps can produce durable coating layers with low energy and time requirements. The usability of new curing lamps and the optimal curing conditions can be explored by FTIR measurement analysis.

Sponsor

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Eitan Jaffe headshot

Eitan Jaffe

ALD/MBE chamber construction, experimentation, and analysis with Engstrom Group

Deliverables: 

  • Design graphs and calculations for QCM
  • Curve fitting data for XRR data analysis
  • Experimental data from an ALD experiment
  • Assist in building and testing new ALD/MBE chamber

Abstract:

Atomic Layer Deposition (ALD) is an increasingly popular surface technique that has many uses in the semiconductor and transistor industries. Instruments such as quartz crystal microbalances (QCM) help scientists control the mass flow rates of substrates in these experiments. In order to analyze the success of ALD experiments, microscopy techniques such as XRay Reflection (XRR) and Diffraction (XRD) are utilized. In this project, I will be performing design calculations to determine the size and feasibility of the QCM. In addition, I will be analyzing XRR data taken from tungsten diselenide samples and fitting the data to curves. Furthermore, I will be working on a new hybrid chamber, which uses molecular beam epitaxy (MBE) and ALD to build materials. Then, I will use ex-situ X-Ray Photoelectron Spectroscopy (XPS) and XRR to analyze the experiments.

Sponsor

Engstrom Research Group

 


 

Jai Karnik head shot

Jai Karnik

Mechanical Property Benchmarking for 3D Printed Alloys

Abstract:

One of the industries for which Incodema3D manufactures parts is the Laser Powder Bed Fusion Technology (LPBF). The material datasheets provided by equipment manufacturers are not always sufficiently accurate to represent the results of Incodema3D’s overall work-flow. Thus, the objective of the project is to identify what information has already been obtained on materials properties and then identify and fill in the gaps through testing and publishing datasets that can be given to clients with confidence. The project deliverables include consolidating existing mechanical property data at Incodema3D, designing and executing experiments to gather mechanical property data, statistically analyzing the test data, publishing material property datasheets, and assisting with numerous other R&D project at the company. Mr. Karnik’s work will surely inspire confidence for future Incodema3D clients.

Sponsor:

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Shin Kim head shot

Shin(Andrew) Kim

Principles Research of Organic Microencapsulation and Replacement of Formaldehyde in Manufacturing Process

Deliverables: 

  • Deconstruct the present system and identify other components that may perform better.
  • Of primary concern is the replacement of formaldehyde in our system.
  • Identify emulsification techniques that will give a tighter size control.
  • Better understanding of controlling the release of a core.
  • Better understanding of the correlation between cross-linking, capsule size, wall thickness and release rates.

Abstract:

Microencapsulation evolved from a polymer chemistry research in pursuit of developing commercial products that were capable of controlled release technology. Since the technology’s inception, the microencapsulation industry has been growing ever since. The beauty of micro-encapsulation is that it encloses all states of material-solid, liquid, or gas- inside a tiny "bubble" of capsule wall and holds it for a designated time or a specific environment. By regulating the composition of the capsule wall and tuning the processing techniques the release time and condition of the materials inside the capsule can be determined. A better understanding of the principles behind microcapsules and the replacement original components could open up unprecedented applications of organic capsules.

Sponsor

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Yuanji Li head shot

Yuanji Li

High Speed Nanomachines for Semiconductor Metrology

Abstract:

The demand for low powered, high performance electronic devices has triggered the aggressive scaling down of transistors into the 10 nm node and beyond technologies. However, problems remain. Besides the complex lithographic challenges that are eminent at these nodes, device testing struggles continue to persist. At these extreme nodes, conventional optical techniques for failure analysis are ineffective due to wavelength limitations. Xallent will extend device failure isolation and analysis into the 10 nm node and beyond by developing high speed and cost effective nanomachines for semiconductor metrology.

Sponsor: 

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Zhihao Liao head shot

Zhihao Liao

Corporate experience

MSE M.Eng. students can do an internship with a range of companies from small businesses to Fortune 500 companies. Corning Incorporated is an American multinational technology company that specializes in specialty glass, ceramics, and related materials and technologies including advanced optics, primarily for industrial and scientific applications.

Sponsor

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Rong-Ting Liou head shot

Rong-Ting Liou

Corporate experience

MSE M.Eng. students can do an internship with a range of companies from small businesses to Fortune 500 companies. Corning Incorporated is an American multinational technology company that specializes in specialty glass, ceramics, and related materials and technologies including advanced optics, primarily for industrial and scientific applications.

Sponsor

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Chang Liu head shot

Chang Liu

Optimizing Micro Fiber and 3-D Printing Nozzle for Better Mechanical Strength in Cement

Deliverables: 

  • Natural fibers will be tested for their tensile properties and interfacial shear stress (IFSS) with cement.
  • Simple method of measuring IFSS
  • Find effect of fiber loading on properties of cement
  • Effect of nozzle design on cement 3-D printing.

Abstract:

Cement has been used in human civilization for thousands of years. It has good mechanical properties in compression but performs horrible in tension. We have used asbestos fiber, steel, polypropylene, and glass fiber to improve the properties of cement in tension. This project focuses on improving the properties by adding natural fiber such as hemp, jute, and ramie. Natural fibers are abundant in quantity, less expensive, lighter, biodegradable. They also consume less energy in production compare to traditional fiber/steel. This project will find out the optimum fiber in micrometer size to fit in cement and could provide the largest improvement on mechanical properties of cement. Also, this project will also modify the nozzle of 3-D printer to have a more aligned orientation of fiber in loading direction.

Sponsor

Netravali Research Group


 

Weijin Lu head shot

Weijin Lu

Corporate experience

MSE M.Eng. students can do an internship with a range of companies from small businesses to Fortune 500 companies.  Sartomer is the premier global supplier of acrylate and methacrylate monomers and oligomers used in ultraviolet curable, electron beam curable, and peroxide curable inks, coatings and adhesives.

Sponsor

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Yuhan Ma Head shot

Yuhan Ma 

Abstract: 

Solder materials have been used for PCB assembly for a few decades. Tons of different electronic components are soldered on the PCB to build an electronic device, like the computer motherboard or a mobile phone. Reliability of the solder joint will significantly impact the sustainability of the electronics, which are commonly built through the solder reflow process. The testing vehicles for solder reliability characterization have to be same or similar to the real PCB assembly from the electronics. The proposed project is focusing on designing the PCB testing boards, which will be reflowed to form the PCB assembly after placing the components and tested in the accelerated condition.

Sponsor: 

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Drishti Masand head shot

Drishti Masand

Investigating and replacing of critical silver epoxy material

Deliverables: 

  • Characterization of current silver epoxy material used. 
  • Researching to find an alternative silver epoxy material. 
  • Characterizing alternative materials and comparing properties with current materials. 
  • Finding a suitable alternative materials that matches all the criteria.

Abstract:

Transonic Systems designs and manufactures a variety of different flow sensors that are used to measure flow in applications such as dialysis surveillance, CABG surgery and neurosurgery.  A key component used for electrical connections and acoustic impedance is silver epoxy, which has become obsoleted with a last time buy available in December 2018. The purpose of this focused project is to identify a suitable replacement material, prototype use of the material and work with Transonic to verify and validate the new product and associated manufacturing processes. The project involves collaborating with Transonic’s new product development engineers and manufacturing engineers; speaking with supplier technical support and material characterization. 

Sponsor

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Peter Romero Headshot

Peter Romero

Electrochemical Reduction of Carbon Dioxide

Deliverables: 

  • Develop pricing models for accurate financial feasibility of SOFCs and similar fuel cell technology
  • Approximate performance and efficiency of SOEC
  • Determine large-scale feasibility of electrochemical reduction of CO2

Abstract:

Carbon dioxide is a major contributor to global warming and climate change. As a result, there is much research into different techniques to sequester, and even utilize, carbon dioxide from its many sources (i.e. combustion reactions, manufacturing, etc.). The objective of this project is to assess the economic feasibility of electrochemical reduction of CO2 via solid oxide electrolyzer cells (SOECs). This work will be done by approximating thermodynamic energy constraints and estimating operating costs, capital costs, and potential financial incentives.

Sponsor

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Adith Shankar Head shot

Adith Shankar

Study of the Effect of Residual Stress on CVT Chain Fatigue Performance by High Energy X-Ray Diffraction

Deliverables: 

  • Using CHESS facilities, find surface residual stresses and cross section residual stress profiles of CVT chain link plates and pins through high energy X-ray diffraction and confirm the relationships to the component processes of the links and pins.
  • Process effect at specific part locations with correlation to FEA predictions.
  • Evaluation of finished parts to predict processes used to produce the part.

Abstract:

Due to increased demand for improved fuel efficiency, reduced emission, and lowered cost in the automotive industry, BorgWarner is developing high performance CVT (Continuous Variable Transmission) chains. Residual stresses on the chain components play a critical role in the chain fatigue performance. Thus, it is of great importance to improve the chain fatigue performance by understanding the relationship between the residual stress and component processes (e.g. polishing, shot peening, cold working, etc.). Cornell’s CHESS facility can use high energy X-Ray Diffraction for thorough penetration in over 1 inch thick steel in order for non-destructive cross section residual stress analysis on the link plates and pins.

Sponsor

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Kaushalendra Singh headshot

Kaushalendra Singh

Abstract: 

The reduction of the mechanical losses due friction and wear is critical to long term reliability of automotive chains. Automotive chains, built up of links and pins, must show high resilience under severe stress, wear and shock. The contact surfaces between these components are prone to high wear and it is imperative to reduce the friction between these surfaces with the help of protective coatings. Although the automotive industry has used such protective coatings for some time now, the identification of the coating materials and the optimization of the film parameters is still a challenge. This project aims on finding a suitable method for application of the coating materials followed by structural and tribological characterization.

Sponsor: 

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Sirui Tan Head shot

Sirui Tan

Abstract: 

Nowadays, nanoscale characteristic phenomena have become important with the advancement of research fields into the nano-world. The Scanning Electron Microscope (SEM) is one of the most useful tools used in research to obtain the nano-structure of samples. However, it has some shortcomings such as charge injection into the sample and not being able to detect electronic properties of thin film materials. This project will focus on integrating conductive nanopillars into Xallent nanoprobes for SEM based testing of thin film materials.

Sponsor:

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Jianing Tang head shot

Jianing Tang

Aluminum Nitride Literature Review Project

Deliverables: 

  • In-depth understanding of mechanical properties and reliability concerns of Aluminum Nitride
  • Fabrication methods and concerns of Aluminum Nitride and possible solutions that can be implemented.
  • Work on improving the performance of piezoelectric materials used for accelerator sensor.

Abstract:

Kionix is a large producer of MEMS inertial sensors. To date, these have mostly been a change in capacitance to detect a change in acceleration. For a new project we are investigating piezoelectric effect for sensing very small changes in acceleration. We’ve identified Aluminum Nitride (AlN) as a key material. As this is new for our team, we’d like a student to gather, review, summarize and present key aspects to consider in processing, variability, control, and reliability of this material.

Sponsor

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Shengqi Wang head shot

Shengqi Wang

Discovery of altered structure-property relationships in the organic and inorganic constituents of type 2 diabetic bone

Abstract:

Bone in patients with type 2 diabetes faces a higher risk of fracture. Because there are many differences in the composition of bone from patients with type 2 diabetes compared to healthy bone, collecting and analyzing Fourier transform infrared and spectrum data can help us to determine the difference, identify what cause a higher fracture rate. Moreover, we will also design and implement machine learning algorithms to distinguish bone types based on their data.

Sponsor: 

Eve Donnelly Head Shot
Prof. Eve Donnelly

 

Yujia Wang head shot

Yujia Wang

Microstructural Morphologies and Porosity of Sintered Ag with FIB Process

Deliverables: 

  • Preparation of the cross-section samples of Ag sintered joints with FIB techniques
  • Morphologies and porosity of Ag sintered joints.
  • Effect of sintering process on the porosity of Ag sintered joints.

Abstract:

The focus of this project is to investigate the microstructural morphologies of the Ag sintered joints, which has been considered as alternative die attach materials to the soldered joints. The major advantages of silver sintered joints are lowprocess temperature, high thermal and electrical conductivity, as well as high melting temperature, which enable Ag sintered joints’ long-term reliability in the use of electronic devices with high power density and/or have a high operating temperature. However, coefficients of thermal expansion (CTE) mismatch of the silver sintered joints, chips and substrates will negatively affect the devices life cycle. Various strategies for alleviating the CTE mismatch have been investigated. To optimize those strategies, we need to fully understand the effect of sintering process conditions on porosity and morphologies of sintered Ag joints.

In this project, focused ion beams (FIB) technique will be used to fabricate samples at micro-scale. SEM will be performed before and after the thermalmechanical testing. Data of the cross-sectional microstructural morphologies and porosity of the samples will be collected and analyzed. Correlation between the sintering process and Ag sintered joints’ porosity will be built.

Sponsor


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Yunan Wu head shot

Yunan Wu

Testing PCB Board Design

Abstract: 

Solder materials have been used for PCB assembly for a few decades. Tons of different electronic components are soldered on the PCB to build an electronic device, like the computer motherboard or a mobile phone. Reliability of the solder joint will significantly impact the sustainability of the electronics, which are commonly built through the solder reflow process. The testing vehicles for solder reliability characterization have to be same or similar to the real PCB assembly from the electronics. The proposed project is focusing on designing the PCB testing boards, which will be reflowed to form the PCB assembly after placing the components and tested in the accelerated condition.

Sponsor: 

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Zhuyun Xie Head Shot

Zhuyun Xie

Viola Zhang Head Shot

Viola Zhang

Cellulose Reinforced-Cement: Enhancing Toughness and Tensile Strength

The current state of building employs the usage of various materials, but cement has been successfully used throughout architectural history and remains to have high potential in fulfilling the needs of the present and forthcoming day. It has been evolving to have improved material properties and greater applications, but cement is notable primarily for its compressive strength. Its usage as a material can grow significantly if its tensile strength and toughness were heightened.

Sponsor:

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Professor Anil Netravali