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Article
Analytical and FEM models for thermal analysis and residual stresses using wire arc-based welding and additive manufacturing of SUS304
Austenitic stainless steel, also known as SUS304, has a wide industrial application. The resultant residual stresses and deformation due to arc welding play a critical role in an in-service SUS04 part failure....
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Article
Integrated approach for AlSi10Mg rapid part qualification: FEM, machine learning, and experimental verification in LPBF-based additive manufacturing process
An integrated approach combining finite element modelling, machine learning, and experimental verification was proposed for develo** process maps to optimize the LPBF process for AlSi10Mg alloy. A transient ...
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Article
Microstructure, Mechanical Properties and Oxidation Behavior of Refractory Multi-principal Element Alloys by Laser Remelting and Conventional Manufacturing
Refractory multi-principal element alloys (RMPEAs), HfNbTaTiZr, (HfNbTaTiZr)9Cr, and (HfNbTaTiZr)9Al, were manufactured using vacuum arc melting followed by laser remelting to mimic additive manufacturing. The mi...
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Article
Microstructure and Residual Stress in Functionally Graded 316L Stainless Steel/Inconel 625 Alloys Fabricated by Direct Energy Deposition
Functionally graded materials (FGMs) provide a unique solution to combine distinct properties within a single component to enhance its overall performance. Understanding the microstructure and residual stress ...
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Article
Component repair using additive manufacturing: experiments and thermal modeling
The objective of this work is to propose an advanced automated damage detection and damage reconstruction algorithm for damaged gear tooth repair. It can automate tool path design and provide precise repair vo...
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Article
Voxel-Based Geometry Reconstruction for Repairing and Remanufacturing of Metallic Components Via Additive Manufacturing
In the component repair process using additive manufacturing (AM) technique, reconstructing the repair volume is essential to generate the repair tool path and guide the AM system to deposit correct geometry o...
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Article
An efficient predictive modeling for simulating part-scale residual stress in laser metal deposition process
Residual stress and deformation are common issues which prevent dimensional accuracy and lead early fatigue of products by laser metal deposition process. Finite element analysis is an efficient means to estim...
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Article
Temperature and residual stress distribution of FGM parts by DED process: modeling and experimental validation
Laser direct energy deposition (DED) is an advanced additive manufacturing technology, which can produce fully dense and functionally graded materials (FGMs) metal parts. Residual stress and distortion are cru...
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Article
Characteristics of Inconel 625—copper bimetallic structure fabricated by directed energy deposition
Inconel 625 (In625) is preferred under the circumstances where high strength and corrosion resistance at elevated temperatures are required. However, the restricted thermal conductivity constrains the applicat...
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Article
Bisection searching based reference frame update strategy for digital image correlation
The strategy to update the reference frames in the digital image correlation analysis is an essential but often overlooked problem. A good reference frame update strategy should be able to adjust the frame ste...
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Article
Experimental Characterization of a Direct Metal Deposited Cobalt-Based Alloy on Tool Steel for Component Repair
Casting dies made of tool steel are subject to impact, abrasion, and cyclic thermo-mechanical loading that can result in damage such as wear, corrosion, and cracking. To repair these defects, materials envelop...
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Article
Effects of tool path in remanufacturing cylindrical components by laser metal deposition
Laser metal deposition as an additive manufacturing process has been widely utilized for component repair. In this study, in order to investigate the influence of tool path on characteristics of coatings for c...
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Article
Build Strategy Investigation of Ti-6Al-4V Produced Via a Hybrid Manufacturing Process
Hybrid manufacturing (HM), which integrates additive and subtractive manufacturing in one system, has become a popular choice for near-net-shape fabrication of complex parts. Although HM systems have been inve...
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Article
Damage reconstruction from tri-dexel data for laser-aided repairing of metallic components
The laser-assisted additive manufacturing process for component repair requires the repair volume to generate the tool path for building up specific material in the worn area. This paper introduces a damage re...
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Article
Modeling analysis of argon gas flow rate’s effect on pre-mixed powder separation in laser metal deposition process and experimental validation
Pre-mixed powder is frequently used powder supply to fabricate functional gradient material by laser metal deposition (LMD). Argon gas flow blows the powder mixture following feeding pipe to melt pool in the L...
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Article
Evaluation of component repair using direct metal deposition from scanned data
In this work, the repair volume of AISI H13 tool steel samples with hemisphere-shaped defects was reconstructed through reverse engineering and the samples were repaired by laser-aided direct metal deposition ...
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Article
Damage detection and reconstruction algorithm in repairing compressor blade by direct metal deposition
Aero-engine blade repair is challenging due to its complicated geometry and unique defects after serving in a harsh environment. Traditional manual-based remanufacturing processes are not capable of yielding c...
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Article
Additive manufacturing of a new Fe-Cr-Ni alloy with gradually changing compositions with elemental powder mixes and thermodynamic calculation
It is becoming an urgent need to synthesize novel alloy possessing both corrosion resistance and sufficient plasticity to meet various functionality requirements in severe corrosion working environment. This s...
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Article
Open AccessMacro-/Micro-Controlled 3D Lithium-Ion Batteries via Additive Manufacturing and Electric Field Processing
This paper presents a new concept for making battery electrodes that can simultaneously control macro-/micro-structures and help address current energy storage technology gaps and future energy storage require...
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Article
Defect classification of laser metal deposition using logistic regression and artificial neural networks for pattern recognition
Detecting laser metal deposition (LMD) defects is a key element of evaluating the probability of failure of the produced part. Acoustic emission (AE) is an effective technique in LMD defect detection. This wor...
