Results 181 to 190 of about 54,858 (313)

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

A method for in situ SEM fracture studies of brittle materials using the double torsion technique : application to nuclear graphite

, 2011
This work concerned the design and development of a miniature double torsion (DT) testing rig, for use inside the chamber of a scanning electron microscope, to perform in situ loading studies of brittle materials using the DT fracture mechanics specimen.
Rosie, Kathryn A
core  

Study on Acoustic Emission <i>b</i>‑Value Characteristics in Hydraulically Fractured Shale Fracture Propagation under High Confining Pressure Conditions. [PDF]

ACS Omega
Zhao H, Sun W, Liang B, Yang Y, Wang C, Liu Q, Liao B, Bu Y, Zhao Y, Gao Y, Wu X, Zeng X.   +11 more
europepmc   +1 more source

Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths

Advanced Science, EarlyView.
Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears, Kerrianne Harrington, Jonathan C. Knight, William J. Wadsworth, James M. Stone, Tim A. Birks   +5 more
wiley   +1 more source

Influence of interface bonding strength on brittle crack propagation in bi-material structural components

, 2004
The influence of the interface bonding strength on brittle crack propagation in bi-material structures is investigated. In this study a crack is set at the vertex of the interface between two joined dissimilar materials.
M. PAGGI, CARPINTERI A, Paggi, M., Paggi, Marco, Carpinteri, Alberto, Carpinteri, A.   +5 more
core  

Experimental study of the effect of natural fracture curvature on hydraulic fracture propagation behavior. [PDF]

Sci Rep
Gong X, Jin Z, Ma X, Liu Y, Li G, Guo Y.
europepmc   +1 more source

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

Advanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong, James Trevarthen, Igor Dolbnya, Wadwan Singhapong, Nicholas Pilato, Richard Butler, Jiraphant Srisuriyachot, Alexander J. G. Lunt   +7 more
wiley   +1 more source

Strong embedded discontinuities for simulating fracture in quasi-brittle materials

, 2011
In this paper embedded strong discontinuities are used to model discrete cracking in materials like concrete. In the approach followed a discontinuous displacement field is considered and the deformation is localized at a surface of zero width.

core  

Efficient Fracture Propagation Solver Based on the Displacement Discontinuity Method with Application to Fiber Optic Sensing. [PDF]

ACS Omega
You S, Qian X, Ling F, Liao Q, Yan Z, Wu X, Wang X, Li X.   +7 more
europepmc   +1 more source

Architected Inverse Nacre Hydrogels With High Strength and Crack‐Insensitive Toughness

Advanced Science, EarlyView.
Hydrogels hold promise for biomedical and engineering applications, yet their practical use is fundamentally limited by the strength‐toughness trade‐off and poor fatigue resistance. In this study, a bioinspired inverse nacre architecture constructed via a scalable thermo‐calendering process is introduced, which overcomes these classic limitations ...
Haidi Wu, Qin Su, Cheng Guan, Biwang Pan, Wenjie Hu, Jun Yan, Yifan Feng, Longcheng Tang, Xuewu Huang, Jiefeng Gao, Wancheng Gu   +10 more
wiley   +1 more source