Results 91 to 100 of about 24,545 (231)

Mechanical testing of metallic foams for 3d model and simulation of cell distribution effects [PDF]

, 2020
Cellular materials have a bulk matrix with a larger number of voids named also cells. Metallic foams made by powder technology represent stochastic closed cells.
Campana, Francesca, Mancini, Edoardo, Pilone, Daniela, Sasso, Marco   +3 more
core   +1 more source

Pandemic Geographies of Home: Domestic Thresholding in Response to COVID‐19

Transactions of the Institute of British Geographers, EarlyView.
Short Abstract With the home at the forefront of political and public health responses to COVID‐19, the thresholds between domestic space and the world beyond acquired a new significance in people's everyday lives. This paper introduces the concept of ‘thresholding’ to explore the ways in which internal and external thresholds are understood and ...
Alison Blunt, Kathy Burrell, Annabelle Wilkins, Georgina Endfield, Miri Lawrence, Eithne Nightingale, Alastair Owens, Jacqueline Waldock   +7 more
wiley   +1 more source

Parametric characterization and error analysis of Hopkinson bar waveforms

Next Materials
The Hopkinson bar technique is an essential method for characterizing material dynamic properties. This study develops a parametric framework for stress waveform characterization, incorporating time-dependent markers (t0 to t3), amplitude-dependent ...
He Chen, Guangping Zou
doaj   +1 more source

Experimental Investigations on the Energy Absorption of Aluminum TPMS Structures Under Dynamic Loading

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Triply periodic minimal surfaces (TPMS) constitute a prominent class of cellular structures and have gained considerable attention in current research. These structures are genus‐infinite surfaces with zero mean curvature, which prevents self‐intersection. They also exhibit periodicity in all three spatial directions and exhibit enhanced multi‐
Sören Bieler, Denis Anders, Marcel Walkowiak, Kerstin Weinberg   +3 more
wiley   +1 more source

Advances in experimental assessment of dynamic tensile strength of concrete by the spalling technique

EPJ Web of Conferences, 2015
An experimental method to test concrete in dynamic tension by spalling with a Hopkinson bar as loading and measuring tool was developed in 1999. The dynamic strength of concrete specimen and strain rate were indirectly derived from an accurate data ...
Brara Ahmed
doaj   +1 more source

Stress Transfer Mechanism of Flange in Split Hopkinson Tension Bar

Applied Sciences, 2020
To reveal the stress transfer mechanism of the flange in a split Hopkinson tension bar, explicit finite element analyses of the impact of the hollow striker on the flange were performed across a range of flange lengths.
Hyunho Shin, Sanghoon Kim, Jong-Bong Kim
doaj   +1 more source

Design of a split Hopkinson pressure bar with partial lateral confinement [PDF]

, 2016
This paper presents the design of a modified split Hopkinson pressure bar (SHPB) where partial lateral con- finement of the specimen is provided by the inertia of a fluid annulus contained in a long steel reservoir.
Andrew D Barr, Andrew Tyas, Barr A D, Clarke S D, Frew D J, Gray G TIII ed Medlin D, Hallquist J O, James A Warren, Lu H, Pierce S J, Sam D Clarke, Sam E Rigby, Tyas A   +12 more
core   +1 more source

Microbial Controls on Dissolved Organic Nitrogen Cycling During Long‐Term Degradation Experiments

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Dissolved organic nitrogen (DON) is critical for marine microbial growth by providing carbon and nitrogen. Although DON is rapidly cycled, some compounds within this pool can persist for long‐periods of time. To better understand how DON is cycled by marine microorganisms, we conducted 548‐day incubations using surface‐derived dissolved ...
Richard LaBrie, Roxane Maranger, Luc Tremblay, Jennifer Cherrier, Jean‐Eric Tremblay, Nagissa Mahmoudi   +5 more
wiley   +1 more source

One-dimensional dynamic compressive behavior of dry calcareous sand at high strain rates

Journal of Rock Mechanics and Geotechnical Engineering, 2019
Calcareous sand has distinct characteristics in comparison with silica sand, such as dynamic behavior at high strain rates (HSRs). This is closely related to pile driving, aircraft wheel loading and mining activities.
Yaru Lv, Jiagui Liu, Ziming Xiong
doaj   +1 more source

A framework for analyzing hyper-viscoelastic polymers

, 2017
Hyper-viscoelastic polymers have multiple areas of application including aerospace, biomedicine, and automotive. Their mechanical responses are therefore extremely important to understand, particularly because they exhibit strong rate and temperature ...
Siviour, Clive, Trivedi, Akash
core   +1 more source