Results 51 to 60 of about 38,727 (214)

Water hammer dissipation in pneumatic slug tests [PDF]

open access: yesWater Resources Research, 2007
We model and measure the dissipation of water hammer induced by well casing and water elasticity with rapid valve opening at the start of a pneumatic slug test. The higher‐frequency water hammer can obscure slower, aquifer‐controlled, underdamped oscillations of the rigid water column, so a quantitative description of the elastic motion improves the ...
Ostendorf, David   +2 more
openaire   +2 more sources

Field test results of directional well drilling with a hydro-hammer. [PDF]

open access: yes, 2018
Field test results of directional well drilling with a hydro-hammer.
Jiang-fu He (5227361)   +3 more
core   +1 more source

Evaluasi Kuat Tekan Beton Menggunakan Hammer Test Dan Ultrasonic Pulse Velocity (Upv) Pada Jembatan Kuala Samboja [PDF]

open access: yes, 2023
Jembatan Kuala Samboja merupakan sebuah jembatan tipe rangka baja dengan bentang 60 meter yang terletak pada Jalan Poros Balikpapan – Handil II kelurahan Kuala Samboja, Kalimantan Timur.
Tumingan, Ernawati, Budi Nugroho
core   +2 more sources

Smart non-destractive test of a concrete wall using a hammer [PDF]

open access: yesInternational Journal of Electronics and Telecommunications
Large concrete structures such as buildings, bridges, and tunnels are aging. In Japan and many other countries, those built during economic reconstruction after World War II are about 60 to 70 years old, and flacking and other problems are becoming more ...
Atsushi Ito   +2 more
doaj   +3 more sources

STUDI PERBANDINGAN NILAI KUAT TEKAN BETON ANTARA HAMMER TEST DAN COMPRESSION TEST PADA PERKERASAN BTN ANTARA, MAKASSAR [PDF]

open access: yes, 2008
Kekuatan tekan merupakan salah satu kinerja utama beton. Di dalam mengevaluasi kekuatan beton, compression test menjadi standar untuk mengetahui kualitas suatu struktur secara keseluruhan.
Fajrianty, Ika Pratiwi
core  

Schematic diagram of the field test configuration while in horizontal directional well drilling with hydro-hammer. [PDF]

open access: yes, 2018
Schematic diagram of the field test configuration while in horizontal directional well drilling with hydro-hammer.
Jiang-fu He (5227361)   +3 more
core   +1 more source

Modelling and Test of Down-the-Hole Hammer

open access: yesJournal of Drive and Control, 2015
Research and development of mineral resource related products has progressed with the increased need to develop mineral resources. The DTH hammer is one a resultant product. However, due to particular work conditions of underground drilling, it is difficult to obtain direct data on the DTH Hammer.
openaire   +2 more sources

KORELASI NILAI KUAT TEKAN BETON DARI PENGUJIAN ULTRASONIC PULSE VELOCITY (UPV), HAMMER TEST, DAN COMPRESSION TEST PADA BETON MUTU SEDANG [PDF]

open access: yes, 2019
Penelitian ini bertujuan untuk mengetahui: (1) nilai kuat tekan beton yang dihasilkan dari pengujian UPV, hammer test, dan compression test pada beton mutu sedang; (2) hubungan korelasi dari hasil pengujian UPV, hammer test, dan compression test pada ...
Manopo, Hizkia Michael
core  

Evaluation of Rebound Hammer Test as a Combined Procedure Used With Drill Core Testing for Evaluation of Existing Structures [PDF]

open access: yes, 2012
Rebound hammer is a non-destructive test method often used to assess the surface hardness of engineering materials. The method is used as a part of the procedure applied to evaluate existing structures.
Yeşilmen,S., Yeşilmen, Seda
core   +1 more source

Research on Fault Detection and Automatic Diagnosis Technology of Water Hammer in Centrifugal Pump

open access: yesApplied Sciences
Centrifugal pumps are important equipment in industrial production, and their safe and reliable operation is of great significance to water supply and industrial safety.
Lei Chen   +3 more
doaj   +1 more source

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