Results 41 to 50 of about 215,249 (299)

Prediction Model of Drilling Performance for Percussive Rock Drilling Tool

Advances in Civil Engineering, 2020
This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate
Dae-Ji Kim, Jaewon Kim, Booyeong Lee, Min-Seok Shin, Joo-Young Oh, Jung-Woo Cho, Changheon Song   +6 more
doaj   +1 more source

Repeatability of concrete rebound hardness using comprehensive statistical analysis

Journal of King Saud University: Engineering Sciences, 2023
The reliability of the result significantly affects the use of the Coefficient of Variation (within the test variation), which reflects the variability of the concrete properties rather than the standard deviation.
Hemraj R. Kumavat, Narayan R. Chandak
doaj   +1 more source

Study on dynamic response characteristics of jointed coal mass under impact load

Meikuang Anquan
Based on the similarity theorem, the material ratio of similar coal body is determined, and the single-layer thin-plate coal body is prepared by pouring.
Jianfeng LIU
doaj   +1 more source

Strengthening of RC Beams with CFC Panels for Improving Impact Resistance

Applied Sciences, 2023
In this study, continuous fiber composite (CFC) panels were used as a strengthening material to improve the impact resistance of reinforced concrete (RC).
Souphavanh Senesavath, Hiroki Tamai, Chi Lu, Yoshimi Sonoda   +3 more
doaj   +1 more source

Impact Resistance Test and Numerical Simulation Study of Scrap Steel Fiber Rubber Concrete

Buildings
The scrap steel fibers (SSF) produced by mechanical processing are processed and added to rubber concrete (RC) to make scrap steel fiber rubber concrete (SSFRC), so as to enhance the strength of the rubber concrete.
Mingshuai Li, Yongtao Gao, Chengzhao Wang, Youzhi Li, Tao Fan   +4 more
doaj   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

Advanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner, Raja Bade, Valentin Ackermann, Roja M. Baumann, Corvin Bischoff, Jona F. Ebeling, Oskar Glenz, Marlo Groh, Jonathan Groth, Finja Hiller, Tom Hirschmüller, Felix Menke, Syntcha Ngantchou Lecdou, Mika Ohler, Daniel Rafii Vardiny, Darius Richter, Dario Röper, Henrik Schumacher, Theresa Stein, Benjamin Vorbeck, Elisabeth Wermter, Kay Kölzig, Jörg Müssig   +22 more
wiley   +1 more source

Measurement of kick loads from horses on stable fittings and building elements [PDF]

, 2014
Fittings and fixtures in horse stables may cause injuries to horses when trapped and there is a great risk of an accident to animal and handler when releasing a horse.
Ventorp, Michael, Wachenfelt, Hans von
core  

Direct Formation of Structural Components Using a Martian Soil Simulant. [PDF]

, 2017
Martian habitats are ideally constructed using only locally available soils; extant attempts to process structural materials on Mars, however, generally require additives or calcination.
Chen, Tzehan, Chow, Brian J, Qiao, Yu, Zhong, Ying   +3 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Evaluation of Walnut Kernel Quality (as Degree of Crushing) Obtained Under Impact Loading

Journal of Agricultural Machinery, 2014
In this research the quality of walnut kernels under impact loading were studied. Due to unavailability of specific varieties of walnut in Iran, the tests were carried out on the available genotypes.
Kh Mohammadi Ghermezgholi, H.R Ghassemzadeh, H Navid, M Moghaddam, H Ghaffari   +4 more
doaj   +1 more source