Results 61 to 70 of about 11,713 (257)

In-situ observation of micro-cracking in a SiC/BN/SiC ceramic matrix composite under tension

Open Ceramics, 2023
Crack spacing and crack opening displacement values are critical for CMC damage and oxidation modeling. A tensile stage used with light and scanning electron microscopy (SEM) was utilized to evaluate micro-cracking under load in SiC/BN/SiC ceramic matrix
Kaitlin Detwiler, Reece Hunt, Elizabeth Opila   +2 more
doaj   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Surface Damage Evaluation of Rolling Bearings Operating under Low Lambda Conditions

Tribology Online
Micro-pitting and wear phenomena were studied both experimentally and through simulation, focusing on the relationship between ball roughness and the lambda, Λ, value.
Izyan Iryani Mohd Yazid, Honami Yanagisawa, Fumiaki Aikawa, Hiroki Komata   +3 more
doaj   +1 more source

Modeling of defects in electronic navigation devices operating in extreme conditions

Aviation, 2008
An investigation of the corrosive and mechanical destruction of microelectronic objects such as multipurpose sensors and navigating devices used in the airspace industry in extreme conditions such as variable temperature, pressure and environmental ...
Alexander Bogorosh, Sergey Voronov, Sergey Larkin, Vladimir Karachiun, Nikolaj Vishniakov, Jurij Novickij, Danutė Ščekaturovienė   +6 more
doaj   +1 more source

A Preliminary Numerical Study on the Interactions Between Nonlinear Ultrasonic Guided Waves and a Single Crack in Bone Materials With Motivation to the Evaluation of Micro Cracks in Long Bones

IEEE Access, 2020
Fatigue damage in a bone occurs in the form of micro-scale cracks with the lengths as small as to a few microns. The evaluation of cracks in bones has recently been a hot topic.
Yujuan Xie, Shengjiang Chen, Xiang Wan, Peter W. Tse   +3 more
doaj   +1 more source

A method of crack detection based on digital image correlation for simulated cracked tooth

BMC Oral Health, 2021
Background Early clinical cracked tooth can be a perplexing disorder to diagnose and manage. One of the key problems for the diagnosis of the cracked tooth is the detection of the location of the surface crack.
Chunliang Zhang, Diwei Mo, Juncheng Guo, Wenlong Wang, Shangbin Long, Houyao Zhu, Danying Chen, Guanghua Ge, Yadong Tang   +8 more
doaj   +1 more source

Influences of Residual Stress, Surface Roughness and Peak-Load on Micro-Cracking: Sensitivity Analysis

Metals, 2021
This paper provides further understanding of the peak load effect on micro-crack formation and residual stress relaxation. Comprehensive numerical simulations using the finite element method are applied to simultaneously take into account the effect of ...
Jairan Nafar Dastgerdi, Fariborz Sheibanian, Heikki Remes, Hossein Hosseini Toudeshky   +3 more
doaj   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Crack Contour Modeling Based on a Metaheuristic Algorithm and Micro-Laser Line Projection

Biomimetics
Currently, bio-inspired metaheuristic algorithms play an important role in computer vision for assessing surface cracks. Also, manufacturing industries need non-destructive technologies based on biomimetics theory for characterizing micro-crack contours ...
J. Apolinar Muñoz Rodríguez
doaj   +1 more source

Experimental and theoretical studies of corrosion fatigue in a high strength steel. [PDF]

, 1995
The present work consists of both experimental and theoretical aspects of corrosion fatigue in a high strength steel. Fatigue tests were conducted under fully reversed shear loading in an aerated 0.6M NaC1 solution at pH6, for a silico-manganese ...
Wu, Xiao Dong
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