Results 1 to 10 of about 60,649 (296)

Study on failure mechanism of cracked coal rock and law of gas migration

open access: yesFrontiers in Earth Science
China possesses abundant coal resources and has extensive potential for exploitation. Nevertheless, the coal rock exhibits low strength, and the coal seam fractures due to mining activities, leading to an increased rate of gas emission from the coal seam.
Feng Du   +8 more
doaj   +1 more source

Static and dynamic mechanical behavior of high-strength 22SiMn2TiB armor steel and welded structure

open access: yesJournal of Materials Research and Technology
High-strength advanced steel and welded structure are key for service safety and life. Static and dynamic compressive mechanical behavior of high-strength 22SiMn2TiB armor steel and welded structure is investigated, which are carried out by using ...
Jitang Fan   +7 more
doaj   +1 more source

Study on the influence of physical parameters of coal and rock on hydraulic fracture propagation law

open access: yesJournal of Applied Science and Engineering
Hydraulic fracturing technology plays an important role in the field of coalbed methane exploration, but the influence of physical parameters of coal seam on hydraulic fracture propagation law is still unclear.
Fan Zhang   +3 more
doaj   +1 more source

A study of poultry processing plant noise control techniques [PDF]

open access: yes
A number of techniques can be used to reduce noise in poultry processing plants. In general, covering the ceiling with a noise-absorbing medium is a practical first step.
Morrison, W. G., Jr., Wyvill, J. C.
core   +1 more source

Effect of Sewing Parameters on Seam Strength and Seam Efficiency [PDF]

open access: yesTrends in Textile Engineering & Fashion Technology, 2018
openaire   +1 more source

Influence of Manufacturing Parameters on Mechanical Properties and Porosity of Additive-Manufactured and TIG-Welded AlSi10Mg Components

open access: yesJournal of Manufacturing and Materials Processing
Additive manufacturing (AM), particularly laser-based powder bed fusion (PBF-LB), enables the production of high-strength, lightweight components made of aluminum alloys such as AlSi10Mg.
Lukas Schulze   +5 more
doaj   +1 more source

Delayed fracture of titanium alloys [PDF]

open access: yes
Delayed fracture tests and brittle properties of titanium aluminum zirconium ...
Meshcheriakov, V. N., Shorshorov, M. KH.
core   +1 more source

AC/DC mixed gas tungsten arc welding of a (FeCoNi)96Al4 high-entropy alloy

open access: yesJournal of Materials Research and Technology
High-entropy alloys (HEA) are a unique class of engineering alloys with excellent properties, and the study of their weldability is one of the key steps in applying them in the engineering field.
Chao Chen   +4 more
doaj   +1 more source

Research on three-dimensional forward modeling of underground radio wave perspective and electromagnetic wave propagation characteristics

open access: yesMeikuang Anquan
The theory of electromagnetic wave propagation in strata is the basis for underground radio wave detection. There are differences in the propagation of electromagnetic waves in the strata when the detection frequency and coal seam occurrence change.
Chengzhong GAO, Yanqing WU
doaj   +1 more source

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