Results 21 to 30 of about 11,945 (153)

Science with a punch [PDF]

open access: yesCurrent Biology, 1997
There are changes afoot in the way that US granting agencies, most notably the NIH, evaluate proposals. Change can be a good thing, and it is probably high time that the NIH reassessed how grants are evaluated. Frankly, I was becoming blase about the entire granting process.
openaire   +2 more sources

Lajes lisas nervuradas bidirecionais com furos

open access: yesRevista IBRACON de Estruturas e Materiais
A passagem de tubulações em elementos estruturais ainda merece atenção especial dos projetistas, principalmente quando o modo de ruptura dos mesmos pode ser alterado devido às mudanças em seus comportamentos.
G. M. Mateus   +3 more
doaj   +1 more source

Center-Punching Mechanical Clinching Process for Aluminum Alloy and Ultra-High-Strength Steel Sheets

open access: yesMetals
In recent years, with the rapid advancement of automotive lightweight technology, the mechanical clinching process between aluminum alloy and ultra-high-strength steel sheets has received extensive attention.
Ping Qiu   +4 more
doaj   +1 more source

Digital Twin-Driven Cyber-Physical System for Autonomously Controlling of Micro Punching System

open access: yesIEEE Access, 2019
Microstructure functional surface is widely used in an optical system because of its special micro-topological structure and particular physical properties.
Rongli Zhao   +6 more
doaj   +1 more source

Failure Mechanisms of Mechanically and Thermally Produced Holes in High-Strength Low-Alloy Steel Plates Subjected to Fatigue Loading

open access: yesMetals, 2020
High-strength low-alloy steels (HSLA) are gaining popularity in structural applications in which weight reduction is of interest, such as heavy duty machinery, bridges, and offshore structures.
Carlos Jiménez-Peña   +3 more
doaj   +1 more source

Penelitian penggunaan resin epoksi untuk membuat landasan potong pon

open access: yesMajalah Kulit, Karet, dan Plastik, 1997
Application of epoxy resin to make specimen punching pad was studied. The specimen punching pad compound was made from epoxy resin, CaCO3 as filler, colour paste, and hardener.
Dwi Wahini Nurhajati   +3 more
doaj   +1 more source

Characterization of galling during dry and lubricated punching of AA5754 sheet

open access: yesAdvances in Industrial and Manufacturing Engineering, 2021
When sheets of aluminum alloys are pierced or trimmed, tool failure occurs by the transfer of material from the sheet to the surface of the tool.
Shayan Shirzadian   +2 more
doaj   +1 more source

A Corneal Punch

open access: yesAmerican Journal of Ophthalmology, 1969
American Journal of Ophthalmology 67 (1969) 966-967. doi:10.1016/0002-9394(69)90098-1 ; Received by publisher: 0000-01-01 ; Harvest Date: 2016-01-04 12:19:01 ; DOI:10.1016/0002-9394(69)90098-1 ; Page Range: 966 ...
Department of Ophthalmology, University of Florida College of Medicine, Gainesville, Florida ( host institution )   +3 more
openaire   +3 more sources

Analysis of woven fabric behavior under punching force

open access: yesJournal of Industrial Textiles, 2022
In several applications, the industrial and protective fabrics might be subjected to punching by the rigid sharp spikes. Fabric resistance to the penetration of the puncher at a constant rate was studied.
Magdi El Messiry, Eman Eltahan
doaj   +1 more source

Effect of Shape, Number, and Location of Openings on Punching Shear Capacity of Flat Slabs

open access: yesBuildings, 2021
Experimental evidence have proved that punching shear capacity of flat slabs deteriorate with the presence of openings located within the critical perimeter around columns.
Ekkachai Yooprasertchai   +5 more
doaj   +1 more source

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