Results 31 to 40 of about 5,375 (207)

In Situ Acoustic Monitoring of Focused Femtosecond Pulse Duration in Air

Laser &Photonics Reviews, EarlyView.
Air‐breakdown acoustics at the laser focus is used to determine femtosecond pulse duration with a simple USB microphone. By chirp‐tuning and compressing 1030 nm pulses from 241 to 50 fs, the acoustic amplitude scales inversely proportional to the square root of the pulse duration, enabling in situ readout over 50 fs–5 ps—crucial for precise pulse ...
Indrė Meškėlaitė, Hsin‐Hui Huang, Haoran Mu, Nguyen Hoai An Le, Tomas Katkus, Edvinas Aleksandravičius, Gabrielius Kontenis, Domas Paipulas, Saulius Juodkazis, Darius Gailevičius   +9 more
wiley   +1 more source

The optimisation of shot peen forming processes

, 2008
An optimisation method based on an effective process model is presented. The calibrated and verified process model simulates peening on realistic components and provides a non-linear relationship between peening parameters and deflections.
Wu, J, Wang, T, Platts, MJ
core   +1 more source

Potential fatigue strength improvement of AA 5083-H111 notched parts by wire brush hammering: Experimental analysis and numerical simulation [PDF]

, 2014
The effects of milling as machining process and a post-machining treatment by wire-brush hammering, on the near surface layer characteristics of AA 5083-H111 were investigated.
SIDHOM, Habib, BEN MOUSSA, Naoufel, SIDHOM, Naziha, JANEB, Sameh, BRAHAM, Chedly   +4 more
core   +1 more source

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

steel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava, Oguz Gulbay, Srinivasa Raghavan Raghuraman, Marion Kreins, Fabian Weber, Peter Starke, Alexander Gramlich, Ulrich Krupp   +7 more
wiley   +1 more source

Advances in shot peening of silicon nitride ceramics

, 2022
S.326-331Shot peening is a common procedure to improve the static and cyclic strength of metal components. It is based on a multiple localized plastic deformation of near-surface regions.
Frey, T., Pfeiffer, W.
core  

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

steel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin, Andi Ard Maidhah, Maziar Ramezani, Wojciech Macek, Cho‐Pei Jiang   +4 more
wiley   +1 more source

Similarity rules for the shot peening process based on finite element simulations

, 2022
S.94-96Multiple shot impacts are analyzed using a three-dimensional Finite Element model with a user defined temperature- and strain-rate-dependent material formulation.
Hochrainer, T., Schulze, V., Gumbsch, Peter, Vöhringer, O., Delonnoy, L., Klemenz, M.   +5 more
core  

Measurement of shot velocity using particle image velocimetry and numerical analysis of residual stress at two shot peening conditions

Mechanical Engineering Journal, 2020
Shot peening is applied to many manufactured parts to improve the fatigue strength of metals by introducing compressive residual stress near the surface. The distribution of compressive residual stress is mainly determined by shot diameter, shot velocity,
Takahiro OHTA, Ninshu MA
doaj   +1 more source

Press Hardening for Sustainable Lightweight Chassis Design in Heavy‐Duty Vehicles: A Material Performance and Life Cycle Assessment Approach

steel research international, EarlyView.
The article explores how high‐strength steels and press hardening revolutionize lightweight chassis design for heavy‐duty vehicles. It reveals that press hardened steels combined with shot peening can cut weight by up to 34% and reduce environmental impact by 21%–32%.
Violeta Vargas‐Parra, Sergi Parareda, Jose Jorge Espí‐Gallart, Jaume Pujante, Gustaf Gustafsson, Henrik Sieurin, David Frómeta, Daniel Casellas   +7 more
wiley   +1 more source

Influence of Conventional Shot Peening and Micro-Particle Peening Processes on the Surface Properties of 42CrMo Steel [PDF]

Cailiao Baohu
To investigate the effects of conventional shot peening and micro-particle shot peening on the surface properties of 42CrMo steel，ABAQUS software was employed to identify the primary and secondary influencing factors of these two processes on material ...
HUANG Huaiyu, ZHANG Fulin, WANG Guanghong, LI Xinshuo, QIAN Qinlang, ZOU Wei, CAO Yufan, LIU Qi, CHEN Yongzhen, CHENG Zhen
doaj   +1 more source