Results 71 to 80 of about 3,932,887 (344)

Tensile strain and fracture of snow [PDF]

Journal of Glaciology, 1980
AbstractMeasurements over several hours of the tensile strain of snow have been carried out, and the strain-rate e can be expressed in terms of stress σ, elapsed time t, and (Celsius) snow temperature T as . It is evident from this expression that a creep fracture does not happen without either an increase of stress or a rise of temperature.
openaire   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Non-destructive evaluation of cement-based materials from pressure-stimulated electrical emission - Preliminary results [PDF]

, 2011
This is the post-print version of the final paper published in Construction and Building Materials. The published article is available from the link below.
A. Kyriazopoulos, Anastasiadis, Anastasiadis, Aydin, C. Anastasiadis, C.J. Brown, D. Triantis, Eccles, Enomoto, Finkelstein, Griffith, Kosmatka, Kyriazopoulos, Landis, Nitsan, Ogawa, Saito, Slifkin, Stavrakas, Stavrakas, Stepanov, Sun, Sun, Sun, Triantis, Triantis, Triantis, Turcotte, Tzanis, Vallianatos, Vallianatos, Vallianatos, Vallianatos, Varotsos, Whitworth, Wittmann   +35 more
core   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Finite element simulations of smart fracture plates capable of cyclic shortening and lengthening: which stroke for which fracture?

Frontiers in Bioengineering and Biotechnology
Introduction: Bone healing can be improved by axial micromovement, as has been shown in animals and human patients with external fixators. In the development of smart fracture plates, the ideal amount of stroke for different fracture types in the ...
Michael Roland, Stefan Diebels, Kerstin Wickert, Tim Pohlemann, Bergita Ganse, Bergita Ganse   +5 more
doaj   +1 more source

Dynamic tensile stress–strain characteristics of carbon/epoxy laminated composites in through-thickness direction

EPJ Web of Conferences, 2015
The effect of strain rate up to approximately ε̇ = 102/s on the tensile stress–strain properties of unidirectional and cross-ply carbon/epoxy laminated composites in the through-thickness direction is investigated.
Nakai Kenji, Yokoyama Takashi
doaj   +1 more source

The development of advanced creep constitutive equations for high chromium steel P91 at low stress range [PDF]

, 2013
Diffusion dominates the creep deformation at low stress range for high chromium steel P91. Brittle creep fracture is caused by cavity nucleation, growth and coalescence of cavities and large precipitates (Laves phase and M23C6) at grain boundary under ...
An, Lili, Lu, Zhongyu, Xu, Qiang
core  

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

Advanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu, Nelson Pereira, Javier Vicente, Carmen Rial Tubio, Senentxu Lanceros‐Méndez   +4 more
wiley   +1 more source