Results 11 to 20 of about 2,453 (294)

Unsupervised learning approach to automation of hammering test using topological information [PDF]

open access: yesROBOMECH Journal, 2017
In this paper we present an online unsupervised method based on clustering to find defects in concrete structures using hammering. First, the initial dataset of sound samples is roughly clustered using the k-means algorithm with the k-means++ seeding ...
Jun Younes Louhi Kasahara   +3 more
doaj   +2 more sources

Hammering Test for Tile Wall Using Deep Learning [PDF]

open access: yesApplied Sciences
Economic activities heavily rely on social infrastructure, such as bridges, tunnels, public structures, and buildings. In Japan, regular inspections are mandated by law to ensure these assets remain functional. This kind of requirement is rare worldwide.
Atsushi Ito   +3 more
doaj   +2 more sources

A Probabilistic Method for Constructing an Empirical Discrimination Model for Hammering Inspection of Cast-Iron Parts [PDF]

open access: yesSICE 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   +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   +8 more sources

A Novel Dynamic Method to Improve First-order Natural Frequency for Test Device [PDF]

open access: yesMeasurement Science Review, 2018
It is important to improve the natural frequency of test device to improve measurement accuracy. First-order frequency is basic frequency of dynamic model, which generally is the highest vibration energy of natural frequency.
Zhang Jun   +4 more
doaj   +2 more sources

Gradient Structure Design and Welding-Hammering Hybrid Remanufacturing Process of Continuous Casting Rollers. [PDF]

open access: yesMaterials (Basel), 2022
To improve the service life and reduce the repair cost of continuous casting rollers, a new welding-hammering hybrid remanufacturing process in which the roller was designed with a gradient structure was proposed, and corresponding equipment was ...
Zhang J, Xiao G, Peng J, Yu Y, Zhou J.
europepmc   +2 more sources

On Variable Scale Evolution of Stress and Strain of TA2 Titanium Plate in Combined Hammering [PDF]

open access: yes, 2022
Combined peening composed of multiple peening processes or peening media is a surface treatment method for comprehensive control of the macro shape and performance of the part.
Bolun Zhang   +5 more
core   +1 more source

Data of AI Method on Hammering Sounds at Concrete Bridge [PDF]

open access: yes, 2022
It is a popular to hammer sound test for visual inspection of deterioration in concrete structures. This convenient method is much effectiveness for expert engineers.
Hiroyoshi ASANO (12415838)   +3 more
core   +1 more source

Development of a Variable-Frequency Hammering Method Using Acoustic Features for Damage-Type Identification

open access: yesApplied Sciences, 2023
Hammer testing, a nondestructive testing method, has been demonstrated to provide information on structural damage. One of the biggest challenges with this testing method is the simultaneous identification of surface, internal, and composite damage ...
Xi Huang, Huang Huang, Zhishen Wu
doaj   +1 more source

Green Synthesis of Cellulosic Nanofiber in Enset Woven Fabric Structures via Enzyme Treatment and Mechanical Hammering [PDF]

open access: yes, 2021
The rapid development of technology in textile industries has been improving textile finishing properties such as durability, water replants and breathability.
Eren, Recep   +5 more
core   +3 more sources

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