Results 11 to 20 of about 30,150 (294)

Progressive Collapse Analysis Of Flat Slab Buildings With Post-Punching Effect [PDF]

open access: yesمهندسی عمران شریف, 2021
The reinforced concrete flat slab is one of the types of floor systems used to construct residential, office and parking buildings. Because of the direct transfer of floor loads to columns, flat slabs are susceptible to punching failure in slab-column ...
E. Mousapoor, V. Ghiasi, R. Madandoust
doaj   +1 more source

Study and application of reasonable parameters for hydraulic punching of layer penetration boreholes in Changping Coal Mine

open access: yesEnergy Science & Engineering, 2023
Aiming at the application of hydraulic punching technology in soft, low permeability, and high gas coal seams in Changping Coal Mine, there are problems such as large workload, poor permeability enhancement effect, and the formation of “blank zones” in ...
Rui Min   +4 more
doaj   +1 more source

Punching Shear Strength of Voided Slab: Literature Review and Evaluation of Design Codes

open access: yesWasit Journal of Engineering Sciences, 2022
Despite of the economic advantages provided by the voided slabs, their design against punching shear failure, as suggested by the current building codes, are based on the equations derived from tests on flat slabs.
Akram mohammad, Ahmed Al-Bayati
doaj   +1 more source

Punching shear strength under static and dynamic loads [PDF]

open access: yesE3S Web of Conferences, 2023
Modern domestic calculation methods and developed countries for determining the bearing capacity of monolithic reinforced concrete slabs for punching do not fully take into account all factors of design solutions and operating conditions.
Trekin Nikolai   +2 more
doaj   +1 more source

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

The damaging punch. [PDF]

open access: yesBMJ, 1985
The mechanical properties of a boxing punch have been determined using several techniques. The results are consistent with the medical consequences of boxing discussed in the report of the Board of Science and Education Working Party on boxing. Data were gathered from a world ranked British professional heavyweight, Frank Bruno, as he punched an ...
Maurice R. Yeadon   +3 more
openaire   +3 more sources

Hot semi-punching and cold scrap removing processes for hot stamping of ultra-high strength steel parts

open access: yesManufacturing Review, 2015
Hot semi-punching and cold scrap removing processes for hot stamping of ultra-high strength steel parts were developed to eliminate laser cutting having low productivity after hot stamping.
Mori Ken-ichiro   +2 more
doaj   +1 more source

Reliability of internal column-slab connection under punching according to NBR 6118:2014

open access: yesRevista IBRACON de Estruturas e Materiais, 2018
This article presents a study on the reliability of internal column-slab connection under punching, designed according to the Brazilian Standard NBR 6118:2014.
G. R. SILVA, A. CAMPOS FILHO, M. V. REAL
doaj   +2 more sources

Reliability and Practical Use of a Commercial Device for Measuring Punch and Kick Impact Kinetics

open access: yesSports, 2022
Martial arts, boxing and combat sports such as mixed martial arts participation have gained popularity in recent years internationally. One common aspect to these sports is the training and skill in maximizing strike impact of punches and kicks, referred
Luke Del Vecchio   +4 more
doaj   +1 more source

Fabrication of Dish-Shaped Micro Parts by Laser Indirect Shocking Compound Process

open access: yesMicromachines, 2016
Compound process technology has been investigated for many years on a macro scale, but only a few studies can be found on a micro scale due to the difficulties in tool manufacturing, parts transporting and punch-die alignment.
Huixia Liu   +7 more
doaj   +1 more source

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