Results 21 to 30 of about 355,992 (315)

A Literature Review on Crack Arrest Features for Composite Materials and Composite Joints with a Focus on Aerospace Applications

open access: yesAerospace, 2023
Crack propagation within composite materials or along the interface of composite joints is a phenomenon that might result in catastrophic failure of a structure.
Ioannis Sioutis, Konstantinos Tserpes
doaj   +1 more source

High-entropy rare-earth diborodicarbide: A novel class of high-entropy (Y0.25Yb0.25Dy0.25Er0.25)B2C2 ceramics

open access: yesJournal of Advanced Ceramics, 2023
A novel class of high-entropy rare-earth metal diborodicarbide (Y0.25Yb0.25Dy0.25Er0.25)B2C2 (HE-REB2C2) ceramics was successfully fabricated using the in-situ reactive spark plasma sintering (SPS) technology for the first time.
Huidong Xu   +4 more
doaj   +1 more source

Life extension techniques for aircraft structures-Extending durability and promoting damage tolerance through bonded crack retarders [PDF]

open access: yes, 2011
This paper explores the viability of the bonded crack retarder concept as a device for life extension of damage tolerant aircraft structures. Fatigue crack growth behaviour in metallic substrates with bonded straps has been determined.
X. Zhang   +37 more
core   +1 more source

High-fracture-toughness ternary layered ceramics: from the MAX to MAB phases

open access: yesCailiao gongcheng, 2021
The MAX phase of the ternary layered compound and the recently attracted attention of the MAB phase have become the research hotspots in the field of structural ceramics for more than 20 years because of their common characteristics of ceramics and ...
BAI Yue-lei   +7 more
doaj   +1 more source

An experimental investigation of costs of tolerance against leaf and floral herbivory in the herbaceous weed horsenettle (Solanum carolinense, Solanaceae) [PDF]

open access: yesPlant Ecology and Evolution, 2021
Background and aims – A plant’s tolerance of herbivory depends on its ability to endure and compensate for damage so as to lessen the impact that herbivores have on the plant’s performance (e.g. its growth, reproduction, or fitness).
Michael Wise, Erika Mudrak
doaj   +3 more sources

The coevolution of virulence : tolerance in perspective [PDF]

open access: yes, 2010
Coevolutionary interactions, such as those between host and parasite, predator and prey, or plant and pollinator, evolve subject to the genes of both interactors.
Colegrave, Nick   +17 more
core   +1 more source

Density-functional-theory predictions of mechanical behaviour and thermal properties as well as experimental hardness of the Ga-bilayer Mo2Ga2C

open access: yesJournal of Advanced Ceramics, 2022
Mo2Ga2C is a new MAX phase with a stacking Ga-bilayer as well as possible unusual properties. To understand this unique MAX phase structure and promote possible future applications, the structure, chemical bonding, and mechanical and thermodynamic ...
Xinxin Qi   +7 more
doaj   +1 more source

The influence of toughening-particles in CFRPs on low velocity impact damage resistance performance [PDF]

open access: yes, 2014
The role of particle-toughening for increasing impact damage resistance in carbon fibre reinforced polymer (CFRP) composites was investigated. Five carbon fibre reinforced systems consisting of four particle-toughened matrices and one system containing ...
D.J. Bull   +7 more
core   +1 more source

Simultaneous Disruption of Two DNA Polymerases, Pol eta and Pol zeta, in Avian DT40 Cells Unmasks the Role of Pol eta in Cellular Response to Various DNA Lesions [PDF]

open access: yes, 2010
Replicative DNA polymerases are frequently stalled by DNA lesions. The resulting replication blockage is released by homologous recombination (HR) and translesion DNA synthesis (TLS). TLS employs specialized TLS polymerases to bypass DNA lesions.
Sonoda, E   +44 more
core   +1 more source

Low velocity impact response and post impact compression behavior of BMI matrix composites

open access: yesCailiao gongcheng, 2022
A novel kind of lattice-distributed ESTM-fabrics was developed by using polyethersulfone(PES) and U3160.The loading amounts of PES on ESTM-fabrics are 15 g/cm2(ES-15), 25 g/cm2(ES-25), 35 g/cm2(ES-35), respectively.
DONG Huimin   +4 more
doaj   +1 more source

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