Results 41 to 50 of about 24,682 (265)

Study on Progressive Failure of Hard Rock Tunnel After Excavation Under High Stress

Advances in Civil Engineering, 2022
The analysis and simulation of brittle failure of hard rock tunnels under high stress is essential for understanding and mastering the brittle failure characteristics of rock masses and for analyzing and regulating the stability of surrounding rocks in ...
Daning Zhong, Jianlin Chen, Hui Zhou, Xiangrong Chen, Yali Jiang   +4 more
doaj   +1 more source

Zirconia responses to edge chipping damage induced in conventional and ultrasonic vibration-assisted diamond machining

Journal of Materials Research and Technology, 2021
Machining-induced edge chipping damage represents a common challenge in ceramic applications. This paper reports on responses of zirconia materials with porous and dense microstructures to edge chipping damage induced in conventional and ultrasonic ...
Afifah Z. Juri, Yanzhong Zhang, Andrei Kotousov, Ling Yin   +3 more
doaj   +1 more source

Damage accumulation of bovine bone under variable amplitude loads

Bone Reports, 2016
Stress fractures, a painful injury, are caused by excessive fatigue in bone. This study on damage accumulation in bone sought to determine if the Palmgren-Miner rule (PMR), a well-known linear damage accumulation hypothesis, is predictive of fatigue ...
Abbey M. Campbell, Michelle L. Cler, Carolyn P. Skurla, Joseph J. Kuehl   +3 more
doaj   +1 more source

Brittle creep, damage, and time to failure in rocks [PDF]

Journal of Geophysical Research: Solid Earth, 2006
We propose a numerical model based on static fatigue laws in order to model the time‐dependent damage and deformation of rocks under creep. An empirical relation between time to failure and applied stress is used to simulate the behavior of each element of our finite element model. We review available data on creep experiments in order to study how the
Amitrano, David, Helmstetter, A.
openaire   +3 more sources

Damage and dissipation mechanisms in the dynamic fracture of brittle materials: Velocity driven transition from nominally brittle to quasi-brittle

EPJ Web of Conferences, 2010
We present the results of recent dynamic fracture experiments [Scheibert et al., Phys. Rev. Lett. 104 (2010) 045501] on polymethylmethacrylate, the archetype of nominally brittle materials, over a wide range of crack velocities.
Bonamy D., Dalmas D., Scheibert J., Guerra C.   +3 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

On a Computational Approach to Micro- and Macro-modelling of Damage in Brittle and Quasi-brittle Materials

International Journal of Mechanics, 2020
Computational modelling of damage in brittle and quasi-brittle materials needs some coupling between micro- and macroscopic crack initiation and evolution, up to their non-negligible softening behaviour. Most such approaches contain ad hoc evaluations, with some physical and engineering motivations, namely those connected with massive application of ...
Vala, Jiří, Kozák, Vladislav, Jarošová, Petra   +2 more
openaire   +2 more sources