Results 101 to 110 of about 150,616 (300)

The ab-initio aided strain gradient elasticity theory: a new concept for fracture nanomechanics

open access: yesFracture and Structural Integrity, 2019
When the width of cracked nanocomponents made of brittle or quasi-brittle materials is less than approximately , the size of the - dominance zone becomes smaller than and comparable to the fracture process zone ( ).
Tom� Profant, Jaroslav Pokluda
doaj   +1 more source

Mechanochromism of Glassy Polymers Enabled by a Loop‐Forming Supramolecular Mechanophore

open access: yesAdvanced Functional Materials, EarlyView.
The supramolecular mechanophore LOOP is covalently introduced into glassy polymers, capable of reporting force‐induced pre‐failure damage and local fracture events in polymer glasses. Under different mechanical deformation modes, including grinding, tensile stretching, and scratching, LOOP probes irreversible events in polymer glasses through a ...
Linlin Deng   +6 more
wiley   +1 more source

Brittle fracture studied by ultra-high-speed synchrotron X-ray diffraction imaging. [PDF]

open access: yesJ Appl Crystallogr, 2022
Petit A   +9 more
europepmc   +1 more source

Unsteady Crack Motion and Branching in a Phase-Field Model of Brittle Fracture

open access: yes, 2004
Crack propagation is studied numerically using a continuum phase-field approach to mode III brittle fracture. The results shed light on the physics that controls the speed of accelerating cracks and the characteristic branching instability at a fraction ...
Alain Karma   +5 more
core   +1 more source

Amyloidogenic Peptide Fragments Designed From Bacterial Collagen‐like Proteins Form Hydrogel

open access: yesAdvanced Functional Materials, EarlyView.
This study identified amyloidogenic sequence motifs in bacterial collagen‐like proteins and exploited these to design peptides that self‐assemble into β‐sheet fibers and form hydrogels. One hydrogel supported healthy fibroblast growth, showing promise for biocompatible materials. Our work demonstrates that bacterial sequences can be harnessed to create
Vamika Sagar   +5 more
wiley   +1 more source

Regularities of Brittle Fracture Zone Formation in the Zone of Dyke Around Horizontal Mine Workings

open access: yesEng
Mine development in complex geological conditions is associated with the risk of mine stability loss. Geological features such as dykes are characterized by higher strength and a tendency to undergo brittle fracture under the influence of the tectonic ...
Petr A. Demenkov, Polina Basalaeva
doaj   +1 more source

Effect of size on cracking of materials [PDF]

open access: yes, 1971
Brittle behavior of large mild steel elements, glass plasticity, and fatigue specimen size sensitivity are manifestations of strain-energy size effect. Specimens physical size effect on material cracking initiation occurs according to flaw distribution ...
Glucklick, J.
core   +1 more source

Toward Stable Multivalent Metal Batteries: Understanding the Interfacial Chemistry for Magnesium and Calcium Metal Anodes

open access: yesAdvanced Functional Materials, EarlyView.
Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin   +4 more
wiley   +1 more source

Geometry Effects on Mode I Brittle Fracture in VO-Notched PMMA Specimens. [PDF]

open access: yesPolymers (Basel), 2021
Bahadori R   +3 more
europepmc   +1 more source

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