Results 21 to 30 of about 3,634,241 (247)

Experimental investigation on fracture behavior of lignite and its fracturing significance:taking Shengli Coalfield as an example

open access: yesMeitan kexue jishu, 2023
The anisotropy of fracture properties at different bedding orientations of lignite plays an important role in controlling the formation of fracture network of reservoir racturing.
Lichao CHEN   +2 more
doaj   +1 more source

A examination of notch effects in the fatigue of carbon steel by linear notch mechanics.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1988
Fatigue tests of 0.31% carbon steel specimens with a circumferential groove were made in a wide range of configuration parameters. As a result, it has been confirmed that the linear notch mechanics (LNM) can be successfully applied to the examination of notch effects in fatigue.
NISITANI, Hironobu   +3 more
openaire   +2 more sources

The Application of Linear Elastic Fracture Mechanics Analysis to Bluntly Notched Round Bar Specimens.(Dept.M) [PDF]

open access: yesMEJ. Mansoura Engineering Journal, 2021
Une technique a été présentée qui permet l'utilisation de petits spécimens de barres rondes entaillées sans pré-fissuration de chute pour la détermination de la ténacité à la rupture par déformation plane des matériaux d'ingénierie. La technique est basée sur l'analyse de la mécanique de la fracture élastique linéaire et le principe des facteurs de ...
openaire   +1 more source

Tensile strength and fracture toughness of steel fiber reinforced concrete measured from small notched beams

open access: yesCase Studies in Construction Materials, 2022
Steel fiber reinforced concrete (SFRC) is a kind of multiphase composite material and its tensile strength (ft) and fracture toughness (KIC) cannot be easily measured using small samples due to its highly heterogeneous microstructure.
Chen Yixin   +5 more
doaj   +1 more source

Examination of linear notch mechanics by means of FEM.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1985
著者の一人は,切欠き底に生じる破壊や降伏現象を規定するパラメータとして弾性計算による切欠き底の最大応力と切欠き半径を用いる方法,すなわち「線形切欠き力学」,を提案している.この方法を用いる上で,その妥当性と適用限界を明らかにすることは重要なことである.そこで本論文では,5つの負荷形式について有限要素法による弾性解析を行って,その適用限界を検討した.
NISITANI, Hironobu, NOGUCHI, Hiroshi
openaire   +2 more sources

A unifying approach to fatigue design in presence of defects and notches subject to uniaxial loading

open access: yesMATEC Web of Conferences, 2014
In the recent past, Atzori and Lazzarin proposed a diagram able to include the geometrical effects on the fatigue limit of defects, short cracks, long cracks and U-shaped notches of whatever severity.
Atzori Bruno   +2 more
doaj   +1 more source

The Influence of Clamping, Structure Geometry, and Material on Seismic Metamaterial Performance

open access: yesFrontiers in Materials, 2021
Diverting and controlling the impact of elastic vibrations upon an infrastructure is a major challenge for seismic hazard mitigation and for the reduction of machine noise and vehicle vibration in the urban environment.
T. Venkatesh Varma   +7 more
doaj   +1 more source

An Examination of the Notch Effect in Fatigue of Carbon Steels Based on Linear Notch Mechanics

open access: yesJSME international journal. Ser. 1, Solid mechanics, strength of materials, 1989
Fatigue tests of 1.31% carbon steel specimens with a circumferential notch were made under a wide range of configuration parameters. As a result, it has been confirmed that linear notch mechanics (LNM) can be successfully applied to the evaluation of notch effects in fatigue.
NISITANI, Hironobu   +3 more
openaire   +2 more sources

Numerical Analysis of Single Edge Notched Tension Specimen With Fatigue Crack Parameter of Conventional Specimen Using Linear Elastic Fracture Mechanics

open access: yesInternational Journal of Integrated Engineering, 2021
This paper describes the numerical analysis of planar crack growth in high strength steel API 5L X70 whose crack growth parameter is adopted from experimental compact tension (CT) specimen in previous literature. Apart from the fact that conventional fatigue crack growth specimen has bogus geometry constraints, the Single ...
Yusuf Olanrewaju Busari   +3 more
openaire   +1 more source

Flexible Helicoids, Atomic Force Microscopy (AFM) Cantilevers in High Mode Vibration, and Concave Notch Hinges in Precision Measurements and Research

open access: yesMicromachines, 2012
Flexible structures are the main components in many precision measuring and research systems. They provide miniaturization, repeatability, minimal damping, low measuring forces, and very high resolution. This article focuses on the modeling, development,
Yakov Tseytlin
doaj   +1 more source

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