Mojtaba Mozaffar

ORCID: 0000-0003-0688-5818
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About
Contact & Profiles
Research Areas
  • Additive Manufacturing and 3D Printing Technologies
  • Additive Manufacturing Materials and Processes
  • Machine Learning in Materials Science
  • Manufacturing Process and Optimization
  • Remote Sensing and LiDAR Applications
  • Injection Molding Process and Properties
  • Metallurgy and Material Forming
  • Metal Forming Simulation Techniques
  • Digital Transformation in Industry
  • Hydrogen embrittlement and corrosion behaviors in metals
  • Robotics and Sensor-Based Localization
  • Advanced machining processes and optimization
  • 3D Surveying and Cultural Heritage
  • Sustainable Supply Chain Management
  • Mineral Processing and Grinding
  • High Entropy Alloys Studies
  • Advanced Numerical Analysis Techniques
  • Flexible and Reconfigurable Manufacturing Systems
  • Titanium Alloys Microstructure and Properties
  • Remote Sensing and Land Use
  • Drilling and Well Engineering
  • Reinforcement Learning in Robotics
  • Optical measurement and interference techniques
  • Fault Detection and Control Systems
  • Elasticity and Material Modeling

Northwestern University
2018-2025

Amazon (United States)
2024-2025

K.N.Toosi University of Technology
2012-2021

Geomatics (Norway)
2020

Plasticity theory aims at describing the yield loci and work hardening of a material under general deformation states. Most its complexity arises from nontrivial dependence on complete strain history microstructure. This motivated 3 ingenious simplifications that underpinned century developments in this field: 1) criteria location; 2) associative or nonassociative flow rules defining direction plastic flow; 3) effective stress-strain laws consistent with equivalence principle. However, 2 key...

10.1073/pnas.1911815116 article EN cc-by Proceedings of the National Academy of Sciences 2019-12-16

10.1016/j.jmps.2020.103972 article EN publisher-specific-oa Journal of the Mechanics and Physics of Solids 2020-05-25

Additive Manufacturing (AM) is a manufacturing paradigm that builds three-dimensional objects from computer-aided design model by successively adding material layer layer. AM has become very popular in the past decade due to its utility for fast prototyping such as 3D printing well functional parts with complex geometries using processes laser metal deposition would be difficult create traditional machining. As process creating an intricate part expensive Titanium prohibitive respect cost,...

10.1109/dsaa.2019.00069 article EN 2019-10-01

Abstract Discovering manufacturing processes has been largely experienced-based. We propose a shift to systematic approach driven by dependencies between energy inputs and performance outputs. Uncovering these across diverse process classes requires universal language that characterizes performances. Traditional languages, with their individualized syntax terminology, hinder the characterization varying length scales inputs. To enable evaluation of dependencies, we broad facilitates classes,...

10.1093/pnasnexus/pgaf054 article EN cc-by-nc PNAS Nexus 2025-02-20

Cyber-physical systems (CPS) enable unprecedented communication between product designers and manufacturers. Effective use of these technologies both enables requires a new paradigm methods models to identify the most profitable environmentally friendly production plans for manufacturing network. The operating system cyber-physical (OSCM) paired network operations administration monitoring (NOAM) software are introduced. These guide our development mixed integer bilevel programming (BP)...

10.1115/1.4041833 article EN Journal of Manufacturing Science and Engineering 2018-11-26

Double-Sided Incremental Forming (DSIF) is a subcategory of Sheet (ISF) that utilizes two tools to provide squeezing support achieve improved formability and dimensional accuracy. Due the complexity geometric nonlinearities associated with DSIF, finite element (FE) method suitable analysis tool further analyze process mechanics predict forming forces. However, little research specific DSIF has been conducted in relation identifying critical factors affect accuracy simulation terms In this...

10.1016/j.promfg.2019.02.110 article EN Procedia Manufacturing 2019-01-01

The flexibility of modern manufacturing processes such as additive creates an opportunity to build parts with customized material properties and geometries. However, converting this into functionality requires computational tools that can handle highdimensional design spaces. In work, we present a differentiable simulation method for AM is capable designing time-series laser power optimizes thermal behaviors materials, including the overall history heat treatment time each point. We analyze...

10.2139/ssrn.4160375 article EN SSRN Electronic Journal 2022-01-01

Toolpath optimization of metal-based additive manufacturing processes is currently hampered by the high-dimensionality its design space. In this work, a reinforcement learning platform proposed that dynamically learns toolpath strategies to build an arbitrary part. To end, three prominent model-free formulations are investigated toolpaths and demonstrated for two cases dense sparse reward structures. The results indicate learning-based approach achieves high scores, especially when structure present.

10.48550/arxiv.2009.14365 preprint EN other-oa arXiv (Cornell University) 2020-01-01

We present a novel computational paradigm for process design in manufacturing processes that incorporates simulation responses to optimize parameters high-dimensional temporal and spatial spaces. developed differentiable finite element analysis framework using automatic differentiation which allows accurate optimization of challenging such as time-series laser power. demonstrate the capability our proposed method through three illustrative case studies additive for: (i) material parameter...

10.48550/arxiv.2107.10919 preprint EN cc-by arXiv (Cornell University) 2021-01-01

Abstract. Today, three dimensional modeling of objects is considered in many applications such as documentation ancient heritage, quality control, reverse engineering and animation In this regard, there are a variety methods for producing three-dimensional models. paper, 3D system developed based on photogrammetry method using image processing laser line extraction from images. the beam profile radiated body object with video acquisition, frames, coordinates can be achieved. first design...

10.5194/isprsarchives-xxxix-b5-315-2012 article EN cc-by ˜The œinternational archives of the photogrammetry, remote sensing and spatial information sciences/International archives of the photogrammetry, remote sensing and spatial information sciences 2012-07-28

Additive Manufacturing (AM) is a manufacturing paradigm that builds three-dimensional objects from computer-aided design model by successively adding material layer layer. AM has become very popular in the past decade due to its utility for fast prototyping such as 3D printing well functional parts with complex geometries using processes laser metal deposition would be difficult create traditional machining. As process creating an intricate part expensive Titanium prohibitive respect cost,...

10.48550/arxiv.1907.12953 preprint EN other-oa arXiv (Cornell University) 2019-01-01
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