Results 31 to 40 of about 2,322 (261)

Stress measurements in the weak layer during snow stability tests

Annals of Glaciology
The snow compression test is a snow stability test where an isolated column of snow is progressively loaded by tapping on it to induce failure in a possible weak layer.
Silke Griesser, Christine Pielmeier, Håvard Boutera Toft, Ingrid Reiweger   +3 more
doaj   +1 more source

Viscoelastic analysis of stress waves through cohesive snow in layered and 2D configurations

Journal of Glaciology
Dynamic surface loads generate stress waves in snow that can trigger slab avalanches. Previously, we determined Maxwell-viscoelastic model parameters from one-dimensional, homogeneous laboratory experiments resembling Compression Tests (CTs).
Samuel V Verplanck, Ladean R McKittrick, Edward E. Adams   +2 more
doaj   +1 more source

Drop‐Location‐Insensitive Droplet‐Based Electricity Generator Using Polydimethylsiloxane Slippery Covalently Attached Liquid Coatings

Advanced Science, EarlyView.
Drop‐location sensitivity remains a key barrier to practical droplet‐based electricity generators (DEGs). Here, a polydimethylsiloxane slippery covalently attached liquid (PDMS‐SCAL)‐coated interface promotes droplet sliding instead of splitting or bouncing, allowing stable electricity generation from randomly falling raindrops. The resulting PDMS‐SCAL‐
Jung Bin Yang, Donghyeon Yoo, Hideaki Teshima, Donghan Lee, Dongwhi Choi, Dong Rip Kim, Nenad Miljkovic   +6 more
wiley   +1 more source

Microstructure-based modeling of snow mechanics: a discrete element approach [PDF]

The Cryosphere, 2015
Rapid and large deformations of snow are mainly controlled by grain rearrangements, which occur through the failure of cohesive bonds and the creation of new contacts. We exploit a granular description of snow to develop a discrete element model based on
P. Hagenmuller, G. Chambon, M. Naaim
doaj   +1 more source

Static Drainage H2/O2 PEM Fuel Cells Enabled by Water Transport Plates: Pore‐Scale Design and Transport Mechanisms

Advanced Science, EarlyView.
The WTP is a key component of static drainage PEMFCs, enabling cathode water removal and gas sealing through capillary forces. This work investigates the mechanisms governing WTP drainage and sealing performance and develops predictive approaches for WTP design optimization.
Mengdi Guo, Diankai Qiu, Dong Zhu, Linfa Peng   +3 more
wiley   +1 more source

Architected Load Paths Enable Stiffening and Motion Programming in Soft Pneumatic Actuators

Advanced Science, EarlyView.
A single MARS template introduces an architected reinforcement strategy for programmable soft pneumatic actuators through internal structural organization and selective beam removal. This monolithic architecture enables deformation reconfiguration from continuous bending to joint‐like articulation and torsional motion, allowing one compliant platform ...
Jie Wang, Yuwen Wu, Yuze Zhang, Ye Wei, Yuting Ma, Yingxiang Liu, Kai Guo   +6 more
wiley   +1 more source

Behaviorally Adaptive and Inclusive Advanced Driver‐Assistance Systems

Advanced Intelligent Systems, EarlyView.
Advanced driver‐assistance systems (ADASs) are mapped as evolving human‐centered, adaptive technologies linking sensing, driver monitoring, AR/HUD interfaces, patents, regulation, and inclusive design. The review identifies gaps in real‐world evidence, diverse‐driver validation, gaze metrics, and governance, outlining a roadmap for safer, behaviorally ...
Jana Skirnewskaja, Mardavij Roozbehani, Munther A. Dahleh   +2 more
wiley   +1 more source

Estimating the effective elastic modulus and specific fracture energy of snowpack layers from field experiments

Journal of Glaciology, 2016
Measurements of the mechanical properties of snow are essential for improving our understanding and the prediction of snow failure and hence avalanche release. We performed fracture mechanical experiments in which a crack was initiated by a saw in a weak
ALEC VAN HERWIJNEN, JOHAN GAUME, EDWARD H. BAIR, BENJAMIN REUTER, KARL W. BIRKELAND, JÜRG SCHWEIZER   +5 more
doaj   +1 more source

Snow Mechanics Near the Ductile‐Brittle Transition: Compressive Stick‐Slip and Snow Microquakes

Geophysical Research Letters, 2020
The rate‐dependent mechanical response of snow is commonly believed to directly inherit the ductile‐to‐brittle transition (DBT) from the viscoplastic ice matrix.
H. Löwe, M. Zaiser, S. Mösinger, S. Schleef   +3 more
doaj   +1 more source

Vertical NAND Flash Memory‐Based Bayesian Neural Networks With Intrinsic Gaussian Weight Sampling

Advanced Intelligent Systems, EarlyView.
Commercial vertical NAND flash memory supports Bayesian neural networks by using paired cells to produce bell‐shaped weight distributions. Read voltage controls their spread without additional memory cells or changes to the array structure. Simulations based on device measurements demonstrate improved uncertainty estimation and accuracy gains of up to ...
Sung‐Ho Park, Mingyun Oh, Dongbeen Shin, Jaehyeon Kim, Jonghyun Ko, Jiseong Im, Yeongheon Yang, Gyuweon Jung, Jong‐Ho Lee   +8 more
wiley   +1 more source