Results 41 to 50 of about 7,332 (264)

Numerical and experimental investigation of the influence of temperature and grain size on the fracture behavior of rock

Journal of Rock Mechanics and Geotechnical Engineering
Understanding the fracture behavior of rocks subjected to temperature and accounting for the rock's texture is vital for safe and efficient design. Prior studies have often focused on isolated aspects of rock fracture behavior, neglecting the combined ...
Hooman Rezaee, Majid Noorian-Bidgoli
doaj   +1 more source

Novel micro-scale specimens for mode-dependent fracture testing of brittle materials: A case study on GaAs single crystals

Materials & Design, 2020
To study microscale fracture behavior under mode II and mode III loading new sample geometries are proposed. Finite element simulations were carried out to determine the mode I, II and III stress intensity factor distributions over the sample width as ...
J. Ast, J.J. Schwiedrzik, N. Rohbeck, X. Maeder, J. Michler   +4 more
doaj   +1 more source

Experimental Investigation of Mode I Rock Fracture Toughness

, 2020
[Resumen] La tenacidad de fractura en modo I (KIC) es uno de los parámetros más importantes en la mecánica de fractura aplicada a rocas. KIC es una propiedad intrínseca del material que representa su capacidad para resistir su rotura a tracción en la presencia de un defecto preexistente.
openaire   +2 more sources

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

Advanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng, Xinxin Wang, Ruochao Zhao, Zhendong Li, Kai Liu, Ke Yuan, Jia An, Xinwei Li, Chee Kai Chua, Zhonggang Wang   +9 more
wiley   +1 more source

A Novel Procedure for Prediction of Mixed Mode I/II in Fracture Toughness of Laminate Composites [PDF]

علوم و تکنولوژی پلیمر, 2014
Delamination is one of the important modes of failure in laminated composite materials. In this respect, the mixed mode I/II fracture is the most major mode of delamination incidence in laminated composite. In the present research, a relation between the
M. Mahmood Shokrieh, A. Zeinedin
doaj   +1 more source

Melt Grafting of Geometry‐Tailored Voltage Stabilizers for High‐Performance Polypropylene Insulation

Advanced Functional Materials, EarlyView.
A scalable one‐step melt grafting strategy is developed to enhance the dielectric properties of isotactic polypropylene by covalently incorporating thermally stable aromatic voltage stabilizers. This solvent‐free approach improves volume resistivity and DC breakdown strength through deep trap formation and charge localization, offering a sustainable ...
Nazirul Mubin bin Normansah, Taehoon Kwon, Hana Kim, Shin‐Ki Hong, Seung Won Lee, Se Hee Lee, Ik‐Su Kwon, Masahiro Kozako, Minhee Kim, Seunggun Yu   +9 more
wiley   +1 more source

Influence of coupled water and thermal treatments on the fracture characteristics of a typical sandstone

Scientific Reports
Understanding the fracture behavior of rock after coupled water and thermal environment is important for many geotechnical projects. This study examines the influence of coupled water and thermal treatments on the fracture toughness and characteristics ...
Yi Luo, Haohong Zhong, Li Ren, Cunbao Li
doaj   +1 more source

An ultrafast time-resolution method based on picosecond pulsed laser for determining rock fracture toughness at multipoint during the crack propagation

Scientific Reports, 2022
An innovative ultrafast time-resolution method based on a picosecond pulsed laser was employed to investigate the mode-I crack propagation characteristics of fractured rock. Its time resolution is as fast as the degree of 45 picoseconds.
Mingyuan Zhang, Dejian Li, Liu Yang, Lu Chen, Muao Shen, Junhao Huo, Yingjun Li   +6 more
doaj   +1 more source

Fully Bio‐Based Gelatin Organohydrogels via Enzymatic Crosslinking for Sustainable Soft Strain and Temperature Sensing

Advanced Functional Materials, EarlyView.
Enzymatically crosslinked gelatin‐based organohydrogels, fabricated through a fully bio‐based and scalable process, exhibit exceptional strain and temperature sensing capabilities with minimal interference from environmental humidity. These transparent, stretchable, and ionically conductive materials operate without synthetic fillers or dopants.
Pietro Tordi, Adrián Tamayo, Yeonsu Jeong, Bin Han, Tamer Al Kayal, Aida Cavallo, Massimo Bonini, Paolo Samorì   +7 more
wiley   +1 more source

Toughening β‐Ga2O3 via Mechanically Seeded Dislocations

Advanced Functional Materials, EarlyView.
β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng, Jiawen Zhang, Peng Gao, Guosong Zeng, Xufei Fang, Wenjun Lu   +5 more
wiley   +1 more source