Results 21 to 30 of about 70,429 (301)

Application of Micro-Seismic Monitoring System in Dangerous Area of Water Inrush in Zhangji Coal Mine

open access: yesMeikuang Anquan, 2020
According to the dangerous area of water inrush in 1612A working face of Zhangji Coal Mine and the characteristics of mining construction, the methods is proposed that the bolt is used as a signal medium for conducting rock mass fracture, and the micro ...
LIU Xiaoguo, WEI Tingshuang, YU Guofeng, WANG Sixu, HAN Yunchun, MU Wenqiang, LI Lianchong
doaj   +1 more source

Strength Evaluation of Bolt Arrangement in PFRP Bolted Connection with 2 Bolts

open access: yesJournal of the Korean Society for Advanced Composite Structures, 2014
Fiber reinforced plastic (FRP) structural shapes are readily available in civil engineering applications. Among many manufacturing techniques used for FRP structural shapes, pultrusion process is one of the most widely used techniques in civil engineering applications. Pultrusion is a manufacturing process for producing continuous lengths of reinforced
Young-Geun Lee   +5 more
openaire   +2 more sources

Corrosion Effects on Fatigue Behavior of Zn-Cr+3 and Zn Flake Coated M8 DIN 933 Bolts

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
In this study, fatigue behavior of Zn-Cr+3 and zinc flake coated bolts was investigated experimentally by considering corrosion effects. Fatigue tests were conducted on M8x50x1.25 8.8 DIN 933 bolts at normal and corroded conditions at force amplitudes ...
Sezgin Yurtdaş   +4 more
doaj   +1 more source

Analysis of Extended Hollo-Bolt Connections: Combined Failure in Tension [PDF]

open access: yes, 2020
This paper investigates the combined failure mode of the Extended Hollo-Bolt (EHB) and the effect of the column thickness on the tensile behaviour of the blind fastener.
Cabrera, Manuela   +4 more
core   +1 more source

Axial Force Measurement Using Digital Image Correlation

open access: yesNihon Kikai Gakkai ronbunshu, 2022
As a simple and highly accurate axial force management method during manufacturing and maintenance of bolt-tightened structures, we examined a method to calculate the axial force from images of the bolt head. In this method, the axial force is calculated
Takeshi INOUE   +3 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Estimation of the residual stress on the thread root generated by thread rolling process

open access: yesMechanical Engineering Journal, 2015
Yoshimoto had been presented a hypothesis concerning the fatigue strength of a bolt in bolt/nut assembly using Ishibashi's hypothesis on the relationship between the fatigue notch factor and the local stress distribution on the first thread root of ...
Akihiro FURUKAWA, Masaya HAGIWARA
doaj   +1 more source

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Research on Torque Loading Technology Based on L Lever in Spacecraft Bolt

open access: yesMATEC Web of Conferences, 2015
As the main form of structure assembly, the stability of bolt joint is directly related to the performance of spacecraft. This essay is used to analyze the cause of standard torque spanner which is not suitable to the tightening torque and summarized ...
Song Xiaohui, Liu Zhibin, Liu Zhe
doaj   +1 more source

Delayed fracture properties of 1.8 GPa-class ultra-high strength fail-safe bolt

open access: yesNihon Kikai Gakkai ronbunshu, 2018
Delayed fracture susceptibility of 1.8 GPa-class ultra-high strength bolts was evaluated by an outdoor exposure test. Low-alloy steel bars with a chemical composition of Fe-0.4%C-2%Si-1%Cr-1%Mo (mass%) were quenched and tempered at 500 °C for 1 h ...
Yuuji KIMURA   +3 more
doaj   +1 more source

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