Results 21 to 30 of about 38,727 (214)
Solids, 2023 This paper presents the study of a two-hundred-year-old, demolded solid clay brick using the rebound hammer test for the estimation of the compressive strength. During the test, the location and face type influence on the rebound values are monitored and
Girum Mindaye Mengistu +2 more
doaj +1 more source
SICE Journal of Control, Measurement, and System Integration, 2019 A probabilistic method for constructing an empirical discrimination model to inspect defective cast-iron parts (such as graphite-spheroidized defective parts) by the hammering test is proposed.
Kenji Tamaki +3 more
doaj +1 more source
The differences in kinematic parameters of hammer throw finalists of the 2017 London athletics world cup [PDF]
SportLogia, 2020 Hammer throw is motor-wise an extremely complex throwing discipline with the manifestation of several different forces that impede the rotational movement of the device and the thrower in the projected sagittal plane.
Ratko Pavlović +2 more
doaj +1 more source
Experimental study on dynamic pipe fracture in consideration of hydropower plant model
Water Science and Engineering, 2009 In the case of sudden valve closure, water hammer creates the most powerful pressure and damage to pipeline systems. The best way to protect the pipeline system is to eliminate water hammer. The main reasons for water hammer occurrence are valve closure,
Kazumi Ishikawa +4 more
doaj +1 more source
A new anti-vibration hammer rust detection algorithm based on improved YOLOv7
Energy Reports, 2023 Anti-vibration hammer corrosion seriously endangers the safe operation of transmission lines. To better improve the detection effect of anti-vibration hammer corrosion on transmission lines under complex background, in this paper we propose an anti ...
Zhenbing Zhao +3 more
doaj +1 more source
Experimental modal analysis for the plate structures with roving inertial shaker method approach
Journal of Low Frequency Noise, Vibration and Active Control, 2022 In this article, a new roving inertial shaker method approach, using an inertial shaker, is presented to obtain a steel plate’s modal parameters with bolt connections on four sides.
Erdi Gülbahçe, Mehmet Çelik
doaj +1 more source
Gas reverse circulation drilling technology for large-diameter DTH hammer
Meikuang Anquan, 2023 Large diameter DTH hammer is a drilling tool which has been proved by a lot of engineering practice and can improve the construction efficiency of large diameter drilling on mine surface. However, after drilling into the aquifer, the penetration rate of
ZHAO Jiangpeng
doaj +1 more source
Testing Hammer and Stanton's Reengineering Success Diagnostic
Australasian Journal of Information Systems, 2000 Business Process Reengineering (BPR) is no longer referenced in academic literature with the regularity that it was in the heady days of the mid-nineties but it is still in use in Australian organisations. We are also changing processes radically as new software is implemented or new electronic markets are embraced and the lessons of reengineering can ...
Felicity Murphy +2 more
openaire +3 more sources
KORELASI KUAT TEKAN HAMMER TEST (NON DESTRUCTIVE TEST) DAN CORE DRILL (SEMIDESTRUCTIVE TEST) DI GEDUNG KANWIL BRI TEUKU UMAR PRA REKONSTRUKSI [PDF]
, 2023 The Jatingaleh BRI Regional Office is one of the buildings in Central Java that will be reconstructed. This is done to improve the function of the building with new reinforcement.
Sitorus, Mentari Septanya +2 more
core +1 more source
Impact performance optimization of a YDC valve-type double action hydraulic hammer
Natural Gas Industry B, 2018 A YDC type hydraulic hammer is a new valve-type double action hydraulic hammer suitable for oil and gas well drilling. It is hard to find out the optimal matching relationship among various factors based on experience and experiments, for the matching ...
Xueqin Huang +3 more
doaj +1 more source