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Browsing by Author "Shamsaei, Nima"
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Additive Manufacturing of Fatigue Resistant Austenitic Stainless Steels by Establishing the Process-Structure-Property Relationships
Pegues, Jonathan (2019-12-10)
This work presents a multidisciplinary approach (relating microstructure features to mechanical properties) to utilize additive manufacturing as a tool to fabricate superior, fatigue resistant materials. The ultimate goal ...
Advances in Digital Gradient Sensing (DGS) Method for Experimental Mechanics
Miao, Chengyun (2019-09-19)
Shape and surface topography evaluation from measured slopes is of considerable engineering significance in optical metrology and experimental mechanics. These kinematic quantities are often used for metrology of optical ...
Automating Interpretation of Images and Visual Inspections in Modern Manufacturing and Medical Settings
Rasoolian, Behnam (2021-01-08)
Automating visual inspection is rapidly finding its way into non-invasive industrial and medical processes. In this work, we address detection automation opportunities in the task of interpreting both medical and industrial ...
Design Optimization of Lightweight Structures for Additive Manufacturing
Toragay, Oguz (2022-07-26)
Lightweight structures have many applications in different engineering areas, such as automotive, aerospace, or medical industries, among many others. Optimal design of lightweight structures deals with finding the most ...
Fatigue Behavior and Modeling of Polyether Ether Ketone under Variable Amplitude and Multiaxial Loading
Shrestha, Rakish (2020-07-22)
Experimental and analytical roadmap to thoroughly understand and establish benchmark material properties for unfilled polyether ether ketone (PEEK) under monotonic tension and compression, as well as uniaxial and multiaxial ...
A Finite Element Study of an Elastic- Plastic Axisymmetric Sinusoidal Surface Asperity in Contact Against a Rigid Flat with Strain Hardening
Bhandari, Geetanj (2018-04-17)
With the advancement in science and the introduction of new technology, computational modelling of contact between rough surfaces has attracted a great deal of attention. Researchers have developed many rough surface contact ...
Investigating the Process-Structure-Property Relationships of Additively Manufactured 17-4 Precipitation Hardening Stainless Steel
Dastranjy Nezhadfar, Pooriya (2022-07-28)
The present work aims to investigate the process-structure-property relationships for the additively manufactured 17-4 PH stainless steel to improve its mechanical performance. To this end, a multidisciplinary (i.e., ...
Mechanical Characterization and Aging Induced Evolution of Cyclic Properties and Microstructure of Lead-Free Solder Materials
Chowdhury, Md Mahmudur (2020-04-29)
Solder joints in electronic assemblies are often subjected to cyclic (positive/negative) mechanical strains and stresses. Such exposures can occur in variable temperature application environments or during accelerated life ...
A Multiscale Investigation of the Fatigue Behavior of Additively Manufactured Nickel Superalloys
Soleimani Dodaran, Mohammad (2021-11-15)
Fatigue as the most frequent mode of failure among mechanical systems has been the focus of a large part of the research community. Modern manufacturing technologies are developed to address the need for complex geometries ...
Quasi-Static and Dynamic Crack Initiation and Growth in Soda-lime Glass: Full-field Optical Investigations
Dondeti, Sivareddy (2022-11-17)
Soda-lime glass (SLG) is a widely used structural material with numerous advantages in terms of thermal, physical, and mechanical properties besides sustainability and recyclability. It is widely used for structural ...
Study of the Effect of Mechanical Cycling on the Constitutive Behavior of Lead-Free Solders
Hoque, Mohd Aminul (2021-08-05) ETD File Embargoed
Solder joints in electronic assemblies are often subjected to cyclic (positive/negative) mechanical strains and stresses. Such exposures can occur in variable temperature application environments or during accelerated life ...
Thermal Modeling of the Laser-Powder Bed Fusion Process
Masoomi, Mohammad (2018-07-24)
Parts fabricated using laser-based additive manufacturing (AM) methods, such as laser-powder bed fusion (L-PBF) receive very high, localized heat fluxes from a laser within a purged, shielding gas (i.e. argon) environment ...
Understanding and Modeling the Effects of Surface Texture on Fatigue Behavior of Additively Manufactured Parts
Lee, Seungjong (2024-04-29) ETD File Embargoed
Additive manufacturing, considered as a future manufacturing technique, provides an unique advantage of fabricating near-net-shape parts without any additional processes. While there are extensive efforts to improve ...
Understanding Powder Feedstock-Part Performance Relationships in Additive Manufacturing
Soltani Tehrani, Arash (2022-08-01)
In this dissertation, the relationships between the powder feedstock and the mechanical performance of additively manufactured (AM) parts were investigated. In this regard, different aspects of powder feedstock were ...