Results 21 to 30 of about 87,249 (169)
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 +3 more
doaj +1 more source
Ultrasonically Assisted Hammer-Action Penetrators in Planetary Regolith [PDF]
, 2018 This paper describes the effects of combining ultrasonic vibration with hammer-action style penetrators, such as the HP3 probe on the InSight mission. By synchronizing short pulses of vibration with the impact of the hammer, the number of hammer strikes ...
Firstbrook, David +3 more
core +1 more source
Biomimetics, 2023 In order to protect the reinforced concrete (RC) slab structure from damage under some accidental conditions, such as impacting and explosion, we used bio-inspired honeycomb column thin-walled structure (BHTS) to serve as a buffer interlayer for the ...
Shijie Wang, Hongxiang Xia
doaj +1 more source
Estimation of Impact Hardness of Rocks by Means of Drop Hammer Test.
Shigen-to-Sozai, 1992 The impact hardness of rock is normally determined by using a ‘Protodyakonov’ type drop hammer. However, this test cannot be applied to a wide range of rocks. Therefore, standardized impact hardness test using the ‘Protodyakonov’ type drop hammer was carried out and the correlati ons of the resulting values of impact hardness with the mechanical ...
Hideki SHIMADA +2 more
openaire +2 more sources
Time-resolved fuel injector flow characterisation based on 3D laser Doppler vibrometry [PDF]
, 2014 In order to enable investigations of the fuel flow inside unmodified injectors, we have developed a new experimental approach to measure time-resolved vibration spectra of diesel nozzles using a three dimensional laser vibrometer.
Crua, Cyril, Heikal, Morgan R.
core +3 more sources
An experimental study of impact performance of RC piers with different reinforcement ratios
Građevinar, 2019 The most advanced domestic super-high drop hammer impact test system was used in this study to simulate ship-piers collisions. The main focus of this study was to examine the impact forces, displacements, and strain time histories of five reinforced ...
Xiwu Zhou +4 more
doaj +1 more source
Analysis on intrusion characteristic of soft rock under impact load
Meikuang Anquan, 2022 Impact rock breaking technology is widely used in hard rock drilling due to its high drilling efficiency, but the intrusion and crushing characteristics of soft rock under impact load are not clear.
王四一
doaj +1 more source
Prediction of Impact Response for Reinforced Concrete Beams by Numerical Simulation Method [PDF]
Journal of Rehabilitation in Civil EngineeringBrittle characteristics, low tensile strength, and rapid crack propagation upon exposure to impact loads are some of the issues associated with concrete.
Ahmad Rahmati Alaei +1 more
doaj +1 more source
Study on dynamic response characteristics of jointed coal mass under impact load
Meikuang AnquanBased 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
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 +6 more
doaj +1 more source