Results 1 to 10 of about 4,396 (118)

Necking mechanism under various sintering process parameters – A review

open access: yesJournal of Materials Research and Technology, 2023
The process of sintering involves applying pressure and heat to the materials without melting them in order to fuse the particles together into a solid mass.
Nashrah Hani Jamadon   +2 more
exaly   +3 more sources

Characterization of Deformation of Bolts and Induced Stress Wave Propagation under Axial Tensile Stress

open access: yesApplied Sciences, 2023
The nondestructive testing technique used to evaluate the quality of bolt support by detecting the axial force is suitable for the bolt with a short construction time. For the bolt in the support state for a long time period, it may lead to the detection
Chuanming Li   +8 more
doaj   +1 more source

Plasticity and Deformation Mechanisms of Ultrafine-Grained Ti in Necking Region Revealed by Digital Image Correlation Technique

open access: yesNanomaterials, 2021
The conventional engineering stress-strain curve could not accurately describe the true stress-strain and local deformability of the necking part of tensile specimens, as it calculates the strain by using the whole gauge length, assuming the tensile ...
Yonghao Zhao, Yanglin Gu, Yazhou Guo
doaj   +1 more source

Evaluation of deformation-induced anisotropy for plastically deformed polycarbonate

open access: yesMechanical Engineering Journal, 2021
In the present study, the deformation-induced anisotropic mechanical characteristics and the strain distribution are evaluated from the specimens cut from the necking part of polycarbonate.
Sho HIGUCHI, Kenichi SAKAUE
doaj   +1 more source

Improved microstructure and mechanical properties of sheet metals in ultrasonic vibration enhanced biaxial stretch forming [PDF]

open access: yesJournal of Theoretical and Applied Vibration and Acoustics, 2019
Ultrasonic energy is used for applying severe plastic deformation on metal surfaces. In the present work, the effect of ultrasonic vibration on the formability, microhardness and microstructural properties of St14 steel sheet has been investigated. To be
Nima Najafizadeh   +3 more
doaj   +1 more source

Mold Size Effect in Microscale Laser Dynamic Flexible Bulging Assisted by Laser Pre-Shocking

open access: yesMicromachines, 2022
The size effect seriously affects the forming quality of micro-formed parts in the field of micro-forming. This paper focuses on the influence of the mold size effect in microscale laser dynamic flexible bulging (μLDFB). The experimental results indicate
Yijun Fang   +4 more
doaj   +1 more source

Extended Stress–Strain Characterization of Automotive Steels at Dynamic Rates

open access: yesMetals, 2022
Demanding structural applications require a detailed knowledge of the materials response up to the very late stages before failure. Ductile high-strength steels may undergo pronounced necking over the majority of their straining life; this makes a ...
Giuseppe Mirone   +4 more
doaj   +1 more source

Experimental Investigation of the Impact of Necking Position on Pile Capacity Assisted with Transparent Soil Technology

open access: yesAdvances in Civil Engineering, 2022
Necking in different positions of a pile body has a significant influence on the bearing performance of a single pile. The transparent soil model experiment was adopted to investigate the impacts of necking positions on the vertical bearing capacity of a
Qingnian Yang   +3 more
doaj   +1 more source

On the Use of Maximum Force Criteria to Predict Localised Necking in Metal Sheets under Stretch-Bending

open access: yesMetals, 2017
The maximum force criteria and their derivatives, the Swift and Hill criteria, have been extensively used in the past to study sheet formability. Many extensions or modifications of these criteria have been proposed to improve necking predictions under ...
Domingo Morales-Palma   +2 more
doaj   +1 more source

Method of Predicting Necking True Stress in a Thin-Walled Tube Under a Complex Stress State

open access: yesJournal of Mechanical Engineering, 2020
Method of predicting the strength of thin-walled tubes under a complex stress state, taking into account changes in the initial dimensions, is proposed.
Halyna Kozbur
doaj   +1 more source

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