Results 151 to 160 of about 87,767 (354)

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Origins of Wear-Induced Tungsten Corrosion Defects in Semiconductor Manufacturing During Tungsten Chemical Mechanical Polishing

, 2022
Seung-Hoon Choi, Melissa E. Kreider, Adam C. Nielander, Michaela Burke Stevens, Gaurav A. Kamat, Ja Eung Koo, Ki Ho Bae, Ho‐Young Kim, Il Young Yoon, Bo Un Yoon, Kihyun Hwang, Dong Un Lee, Thomas F. Jaramillo   +12 more
openalex   +1 more source

Endotracheal tube defects: Hidden causes of airway obstruction

Saudi Journal of Anaesthesia, 2010
Manufacturing defects of endotracheal tube (ETT) are still encountered in anesthesia practice. Many such defects go unnoticed during routine inspection prior to their use.
Sofi Khalid, El-Gammal Kariman
doaj  

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Influence of manufacturing induced defects on damage initiation and propagation in carbon/epoxy NCF laminates [PDF]

, 2015
Paolo Andrea Carraro, L. Maragoni, Marino Quaresimin   +2 more
openalex   +1 more source

Research progress on microstructure, defects, surface and configuration of additive manufactured typical aviation metals

Journal of Aeronautical Materials
Additive manufacturing is a new manufacturing technique that integrates laser，digitization，materials and other disciplines. It has the advantages of dimensionality reduction manufacturing，complex forming，and high material utilization.
ZHANG Xuejun, CHEN Bingqing
doaj   +1 more source

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 more
wiley   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

A Fast and Accurate Process Variation-aware Modeling Technique for Resistive Bridge Defects

Recent research has shown that tests generated without taking process variation into account may lead to loss of test quality. At present there is no efficient device-level modeling technique that models the effect of process variation on resistive ...
Khursheed, Saqib, Zhong, Shida, Al-Hashimi, Bashir   +2 more
core  

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source