Results 31 to 40 of about 29,835 (313)

Design and Performance Research of Flexible Drill Pipe Joint Based on Bionic Theory

open access: yesGeofluids, 2021
Fatigue fracture is the main failure form of mining drill pipe joints, which directly leads to the occurrence of drill pipe drop accidents. Based on the principle of engineering bionics, the spine structure and kinematic behavior characteristics of ...
Chuanliu Wang, Pei Ju
doaj   +1 more source

Alternative dynamic torsion test to evaluate the elastic modulus of polymers

open access: yesMaterials Research Express, 2020
This work presents an alternative for the determination of the torsion modulus, G, of polymers. These materials may be subjected to shear stresses in some structural applications; thereby, the knowledge of G is of great interest.
Lucas Pereira Piedade   +4 more
doaj   +1 more source

Mechanical behaviour of shape memory alloys for seismic applications 1. Martensite and austenite NiTi bars subjected to torsion [PDF]

open access: yes, 2001
The mechanical behaviour of several specimens of nickel–titanium Shape Memory Alloy (SMA) has been deeply investigated through a large experimental test program and numerical simulations, in view of their possible use as kernel components for seismic ...
M. DOLCE   +3 more
core   +1 more source

Microstructures and Mechanical Properties of Ti-6Al-7Nb Processed by High-pressure Torsion [PDF]

open access: yes, 2014
Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6GPa for disk-shaped specimens.
Doi, Hisashi   +5 more
core   +1 more source

Open Force Field BespokeFit: Automating Bespoke Torsion Parametrization At Scale [PDF]

open access: yes, 2022
The development of accurate transferable force fields is key to realizing the full potential of atomistic modelling in the study of biological processes such as protein--ligand binding for drug discovery.
Simon, Boothroyd   +12 more
core   +1 more source

Mechanical Properties and Microstructural Evolutions of High-Pressure Torsion-Processed Al7068 Alloy [PDF]

open access: yes, 2023
The combination of severe plastic deformation, deformational heat, and frictional heat generated during the high-pressure torsion process has a great effect on microstructural evolutions, including grain refinement, dynamic recrystallization and recovery.
Kim, Jung Gi   +5 more
core   +1 more source

Mechanisms of divergent torsional strain in myopia

open access: yesModern technologies in ophtalmology, 2023
Perpose. To study the mechanism of extralenticular accommodation under conditions of divergent torsional strain (DTS). Material and methods. The study involved 14 students (28 eyes) with mild and moderate myopia, whose average age was 21.7 years. Among them were 4 boys and 10 girls.
A.N. Zakieva, D.I. Terekhina
openaire   +1 more source

Torsion modulus as a tool to evaluate the role of thermo-mechanical treatment and composition of dental Ti-Zr alloys

open access: yesJournal of Materials Research and Technology, 2019
In this study, the mechanical spectroscopy technique was applied to measure the torsion modulus of Ti-xZr (where x = 0, 5, 10 and 15 wt%) alloys for dental applications.
Carlos A.F. Pintão   +2 more
doaj   +1 more source

A Study of the Mechanical Properties of Naturally-Inspired Tubular Structures Designed for Lightweight Applications

open access: yesApplied Sciences, 2023
Inspired by the macro/microstructures of starfish and beetle elytra, a series of bio-inspired structures (BSs) with improved comprehensive mechanical performance were proposed and fabricated.
Lili Liu   +4 more
doaj   +1 more source

Testicular ascent as a mechanism for intra-abdominal torsion

open access: yesRadiology Case Reports, 2010
Testicular ascent, while uncommon, can occur. A testicle that has ascended out of the scrotum can torse and may present as an acute inguinal mass or acute abdomen. Testicle ascent can occur even if previous intra-scrotal location has been documented.
Plitt, David C.   +3 more
openaire   +2 more sources

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