Results 31 to 40 of about 1,322 (132)

Dynamic compression characteristics of layered rock mass of significant strength changes in adjacent layers

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2020
Layered rock mass of significant strength changes for adjacent layers is frequently observed in underground excavation, and dynamic loading is a prevalent scenario generated during excavation.
Sen Wen   +3 more
doaj   +1 more source

Data processing of wave propagation in viscoelastic split Hopkinson pressure bar

open access: yesAIP Advances, 2022
In this study, the polymethyl methacrylate (PMMA) bar was taken as an example to study the data processing of the viscoelastic Split Hopkinson pressure bar (SHPB) during shock wave propagation.
Jiangping Chen   +3 more
doaj   +1 more source

High strain rate compression testing of glass fibre reinforced polypropylene

open access: yesEPJ Web of Conferences, 2012
This paper details an investigation of the high strain rate compression testing of GFPP with the Split Hopkinson Pressure Bar (SHPB) in the through-thickness and in-plane directions.
Cloete T.J.   +3 more
doaj   +1 more source

An Experimental Investigation into Wear Resistance of Mg-SiC Nanocomposite Produced at High Rate of Compaction [PDF]

open access: yesJournal of Stress Analysis, 2018
The Mg-SiC nanocomposite specimens were produced at low strain rate of 8×10−3s−1 using a universal INSTRON testing machine, strain rate of about 8×102s−1 using a drop hammer and at strain rate of about 1.6×103s−1 employing a Split Hopkinson Pressure Bar (
G.H. Majzoobi, K. Rahmani, A. Atrian
doaj   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

open access: yesDeep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang   +4 more
wiley   +1 more source

Pengaruh Beban Fatik dan Non Fatik Terhadap Kekuatan Tarik Impak Baja Karbon st.60

open access: yesTeknika, 2017
Penelitian ini bertujuan untuk mendapatkan kurva Stress–Number of cycles (S-N Curve) baja pada baja karbon st.60, sehingga dapat diketahui endurance limit dari material tersebut.dan untuk mengetahui seberapa besar kekuatan tarik impak material baja ...
Zulmiardi Zulmiardi
doaj   +1 more source

A Comparison of Classical Constitutive Models for High‐Entropy Alloy Behavior: Effects of Medium Strain Rates and Temperature on Plastic Flow

open access: yesMaterials Genome Engineering Advances, EarlyView.
Four constitutive models are evaluated for FeCoNiCr and Al0.6FeCoNiCr HEAs under wide temperature and strain‐rate conditions. The predictive capabilities and limitations of each model are then critically assessed, with particular emphasis on strain rate sensitivity, temperature dependence, and physically unrealistic responses at extreme loading ...
Yooseob Song   +3 more
wiley   +1 more source

Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity

open access: yesAIP Advances, 2015
Accurate characterisation of dynamic behaviour of ceramics requires the reliable split-Hopkinson pressure bar (SHPB) technique and the condition of uniaxial homogeneous specimen deformation.
Zhiyong Wang, Peifeng Li
doaj   +1 more source

Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory

open access: yesDeep Underground Science and Engineering, Volume 5, Issue 2, Page 426-445, June 2026.
The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai   +7 more
wiley   +1 more source

Strain hardening and shock mitigation response of polyurethane under high strain rates

open access: yesAIP Advances, 2021
Polyurethane is a promising candidate for the potting of embedded electronics due to its shock absorbing properties. This paper discusses the less known strain hardening and shock mitigation properties of 4,4′-methylenediphenyl diisocyanate based ...
Amandeep Singh   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy