Results 41 to 50 of about 142,964 (258)

Fatigue fracture surface analysis in C45 steel specimens using X-Ray fractography [PDF]

, 1991
X-Ray fractography is a useful technique to analyse the mechanisms operating in fracture and involves an examination of the fracture surface. In the present investigation, this technique has been employed to study the fatigue fracture behaviour of a ...
Kolster, B.H., Pathiraj, B., Rajanna, K.
core   +3 more sources

Aspects of fracture mechanics in cryogenic model design. Part 1: Fundamentals of fracture mechanics [PDF]

, 1983
The use of fracture mechanics for predicting fracture and fatigue crack growth in metals is ...
Hudson, C. M.
core   +1 more source

Vibration Fatigue Properties and Fracture Mechanism of DD6 Single Crystal Superalloy

Cailiao gongcheng, 2018
Room Temperature vibration fatigue S-N curves of single crystal superalloy DD6 with[001] orientation was investigated and room temperature vibration fatigue limit was obtained. The fracture mechanism was studied by OM, SEM and EBSD. The results show that
LIU Li-yu, GAO Xiang-yu, YANG Xian-feng, HE Yu-huai   +3 more
doaj   +1 more source

Fatigue properties and fracture mechanism of Stellite12 cobalt-based alloy

Cailiao gongcheng, 2021
The three-point bending fatigue method was used to determine the S-N fatigue curves of smooth specimens and straight-notched specimens to study the fatigue properties of Stellite12 cobalt-based alloy, and the fatigue fracture processes of the cobalt ...
MIAO Wen-juan, CAO Rui, CHE Hong-yan, DONG Hao, CHEN Jian-hong   +4 more
doaj   +1 more source

Evaluating a Pragmatic Strength Alternative for Frailty Measurement and Assessing Its Predictive Capacity Against Established Frailty Instruments in Rheumatoid Arthritis

Arthritis Care &Research, EarlyView.
Objective Frailty occurs prematurely in rheumatoid arthritis (RA) and is associated with poor health outcomes. We compared the performance of four frailty instruments, including a pragmatic alternative measure using chair sit‐to‐stand (STS), and evaluated their abilities to predict poor health outcomes.
Kylie E. Riggles, Hannah F. Brubeck, Adrienne D. Tanus, Courtney N. Loecker, Punyasha Roul, Bryant R. England, Elizabeth R. Wahl, James S. Andrews, Namrata Singh, Joshua F. Baker, Patricia P. Katz, Dolores M. Shoback, Jose M. Garcia, Ariela R. Orkaby, Katherine D. Wysham   +14 more
wiley   +1 more source

Environment-dependent very high cycle fatigue (VHCF) in metal additive manufacturing (AM): A critical and emerging paradigm

Review of Materials Research
This overview critically instructs the emerging, but less explored, field of environment-dependent very high cycle fatigue (VHCF) in metal additive manufacturing (AM). As AM technologies are increasingly adopted for structural applications, understanding
Meysam Haghshenas
doaj   +1 more source

High Temperature Fatigue Behavior and Failure Mechanism of Ti-45Al-4Nb-1Mo-0.15B Alloy

Crystals, 2022
Strain-controlled low cycle fatigue experiments were carried out on the TiAl alloy Ti-45Al-4Nb-1Mo-0.15B at 400 °C and 750 °C to reveal the cyclic mechanical behavior and failure mechanism.
Kanghe Jiang, Wei Li, Jingwei Chen, Li Ma, Wu Zeng, Junjie Yang   +5 more
doaj   +1 more source

Associations of Rheumatoid Arthritis Disease Activity With Frailty Over Five Years of Follow‐up

Arthritis Care &Research, EarlyView.
Objective To evaluate whether rheumatoid arthritis (RA) disease activity is associated with frailty both in cross‐section and longitudinally. Methods Participants within the Veterans Affairs Rheumatoid Arthritis (VARA) registry enrolled from 2003 to 2022 were included.
Courtney N. Loecker, Yangyuna Yang, Punyasha Roul, Aaron Baraff, Myra S. Schmaderer, Lani Zimmerman, Kaleb Michaud, Namrata Singh, Grant W. Cannon, Gary Kunkel, Ted R. Mikuls, Ariela R. Orkaby, Joshua F. Baker, Bryant R. England, Katherine D. Wysham   +14 more
wiley   +1 more source

Fatigue and fracture: Overview [PDF]

, 1984
A brief overview of the status of the fatigue and fracture programs is given. The programs involve the development of appropriate analytic material behavior models for cyclic stress-strain-temperature-time/cyclic crack initiation, and cyclic crack ...
Halford, G. R.
core   +1 more source

Experimental and theoretical investigation of the influence of post-curing on mixed mode fracture properties of 3d-printed polymer samples

Scientific Reports
This study explores the mechanical properties and fracture characteristics of additively manufactured acrylonitrile butadiene styrene specimens, focusing on the impact of raster angle and post-process heat treatment.
Bahador Bahrami, Hossein Talebi, M. M. Momeni, M. R. Ayatollahi   +3 more
doaj   +1 more source