Results 11 to 20 of about 116,211 (311)

Numerical Study about the Influence of Superimposed Hydrostatic Pressure on Shear Damage Mechanism in Sheet Metals

open access: yesMetals, 2021
It is generally accepted that the superimposed hydrostatic pressure increases fracture strain in sheet metal and mode of fracture changes with applying pressure.
Mohammadmehdi Shahzamanian   +4 more
doaj   +1 more source

Machine Learning for Predicting Fracture Strain in Sheet Metal Forming

open access: yesMetals, 2022
Machine learning models are built to predict the strain values for which edge cracking occurs in hole expansion tests. The samples from this test play the role of sheet metal components to be manufactured, in which edge cracking often occurs associated ...
Armando E. Marques   +7 more
doaj   +1 more source

Experimental determination of the plastic deformation and fracture behavior of polypropylene composites under various strain rates

open access: yesPolymer Testing, 2021
A strain measurement method is proposed that defines an intrinsic flow stress equation for various strain rates using representative brittle and ductile polypropylene composites.
Minsoo Kim, Tae Yun Park, Seokmoo Hong
doaj   +1 more source

Sheared edge formability of multi-phase steels under in- and out-of-plane deformation [PDF]

open access: yesMATEC Web of Conferences
Multi-phase advanced high strength steels can exhibit significant sheared edge sensitivity due to their microstructures and alloying elements. Processing defects such as centerline segregation of martensite or Ti-based inclusions can affect edge ...
Narayanan Advaith   +4 more
doaj   +1 more source

Mechanically Robust Free-Standing Single-Walled Carbon Nanotube Thin Films With Uniform Mesh-Structure by Blade Coating

open access: yesFrontiers in Materials, 2020
Carbon nanotubes (CNTs) have garnered tremendous attention as building blocks for self-supporting membranes owing to remarkable developments in the manufacturing technology of high-quality CNT films.
Yuichi Kato   +5 more
doaj   +1 more source

Evaluation of impact ductile fracture behaviour of low carbon austenitic stainless steel SUS304L using damage mechanics model [PDF]

open access: yesEPJ Web of Conferences, 2021
To clarify the applicability of the Gurson-Tvergaard-Needleman (GTN) model for impact ductile fracture behaviour, SHB test was reproduced by finite element analysis (FEA).
Takazawa Hidekazu   +4 more
doaj   +1 more source

Experimental characterization and numerical modeling of micromechanical damage under different stress states [PDF]

open access: yes, 2013
The use of HSLA steels for the manufacture of automotive components is interesting from an engineering point of view. This family of steels, while possessing high strength, also has good formability and can be used in forming manufacturing processes.
GERMAIN, Guénaël   +3 more
core   +1 more source

Crushing of roasted Arabica coffee beans

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010
Paper deals with experimental research on the crushing of coffee beans of different kinds under quasi-static compression. The process of the crushing is described in details. It has been shown that there is variability in the crushing strength values.
Šárka Nedomová
doaj   +1 more source

Hydrostatic Tensile Fracture of a Polyurethane Elastomer [PDF]

open access: yes, 1966
The investigation of fracture of polymeric materials in hydrostatic tensile fields constitutes an avenue of approach to the study of fracture in more general three-dimensional environments.
Gerald H. Lindsey   +2 more
core   +1 more source

Evolution mechanism of optical fiber strain induced by multi-fracture growth during fracturing in horizontal wells

open access: yesPetroleum Exploration and Development, 2022
A forward model for optical fiber strain was established based on a planar 3D multi-fracture model. Then the forward method calculating distributed fiber strain induced by multi-fracture growth was proposed.
Ming CHEN   +6 more
doaj   +1 more source

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