Results 171 to 180 of about 2,467 (201)

A method for the metallographical measurement of the CTOD at cracking initiation and the role of reverse plasticity on unloading

Engineering Fracture Mechanics, 2000
A method is proposed for accurately estimating the Crack Tip Opening Displacement (CTOD) at physical cracking initiation in ductile materials. The method requires a few precracked specimens to be loaded in such a way as to exhibit various crack extensions.
T Pardoen, F Delannay
openaire   +1 more source

Effects of Weld Strength Mismatch on J and CTOD Estimation Procedures for SENT Fracture Specimens Based on Plastic Eta-Factors

Volume 3: Materials Technology; Jan Vugts Symposium on Design Methodology of Offshore Structures; Jo Pinkster Symposium on Second Order Wave Drift Forces on Floating Structures; Johan Wichers Symposium on Mooring of Floating Structures in Waves, 2011
This work focuses on the evaluation procedure to determine the elastic-plastic fracture toughness J-integral and CTOD based upon the η-method for welded SENT fracture specimens with clamped ends. The primary objective is to gain additional understanding on the effect of weld strength mismatch on estimation techniques to determine J and CTOD fracture ...
Marcelo Paredes, Claudio Ruggieri
openaire   +1 more source

An Elastic-Plastic Finite-Element Analysis of the J-Resistance Curve Using a CTOD Criterion

1988
The tentative test procedure for determining J-R curves (crack-growth resistance curves based on the J-integral) on compact and three-point bend specimens showed a discrepancy between specimen types: the bend specimen gave a higher J-R curve than the compact specimen.
JC Newman, BC Booth, KN Shivakumar
openaire   +1 more source

Plasticity-Induced Crack Closure Under Thermomechanical Fatigue Loading: Influence of Phase Relationship and Plasticity Model on Crack Closure, Ctod, Ratcheting and Numerical Stability

In this work, plasticity-induced crack closure is studied under strain-controlled in-phase and out-of-phase thermomechanical fatigue (TMF) loading using the finite element method. The influence of the TMF phase, the applied strain ratio and the material model on the crack opening stress and the crack tip opening displacement is investigated. Therefore,
Fischer, Carl (Dr.-Ing.), Seifert, Thomas (Prof. Dr.-Ing.), Schweizer, Christoph (Dr.-Ing.)   +2 more
openaire   +2 more sources

Reducing environmental plastic pollution by designing polymer materials for managed end-of-life

Nature Reviews Materials, 2021
Kara Lavender, Ramani Narayan
exaly  

The chemistry of chemical recycling of solid plastic waste via pyrolysis and gasification: State-of-the-art, challenges, and future directions

Progress in Energy and Combustion Science, 2021
Onur Dogu, Matteo Pelucchi, Ruben Van de Vijver   +2 more
exaly  

Co-pyrolysis of waste plastic and solid biomass for synergistic production of biofuels and chemicals-A review

Progress in Energy and Combustion Science, 2021
Ashwani K Gupta
exaly  

Placing nanoplastics in the context of global plastic pollution

Nature Nanotechnology, 2021
Denise M Mitrano, Peter Wick, Bernd Nowack   +2 more
exaly  

Bioplastics for a circular economy

Nature Reviews Materials, 2022
Jan-Georg Rosenboom, Robert Samuel Langer Jr, Giovanni Traverso   +2 more
exaly  

Plastic pollution in the Arctic

Nature Reviews Earth & Environment, 2022
Melanie Bergmann, France Collard, Joan Fabres   +2 more
exaly