Results 1 to 10 of about 14,580 (115)

Effect of steel fiber reinforced concrete on the heavy-weight floor impact sound performance

Journal of Asian Architecture and Building Engineering
In South Korea, where apartment buildings in which the slabs of each unit are shared by the upper and lower floor units have become common, noises due to the floor impact sound from slabs between upper and lower floor units are coming to the fore as a ...
Geonho Hong
doaj   +4 more sources

Analysis and Evaluation of Impact Sound Insulation of Concrete Floor Structures in Response to Characteristics of Heavy-weight Impact Sources

Transactions of the Korean Society for Noise and Vibration Engineering, 2009
In this study, the impact force levels of bang machine and impact ball were measured, then the heavy-weight impact sounds generated by the bang machine and impact ball were investigated. It was found that the heavy-weight impact sources generated through modal excitation, and the impact force of the impact ball was similar to that of real impact source.
openaire   +4 more sources

COUNTERMEASURE AGAINST HEAVY-WEIGHT FLOOR IMPACT SOUND BY STORAGE FURNITURE WITH TATAMI

AIJ Journal of Technology and Design, 2021
Ryuta TOMITA, Takuya OKANIWA, Kyoko ABE, Yuta OTAKI, Kyoko ABE   +4 more
openaire   +4 more sources

Heavy-weight floor impact sound of a pure framed structure by field measurement and numerical calculation

Acoustical Science and Technology, 2023
Uemura, Tomoaki, Hashimoto, Norihisa, Kondo, Yasuyuki   +2 more
openaire   +3 more sources

Prediction of Vibration-Mode-Induced Noise of Structure–Acoustic Coupled Systems

Applied Sciences, 2022
The exposure of a structure to an acoustic domain induces a sound field owing to the interaction of the air-fluid and structure at the acoustic–structure boundaries.
Suhong Kim, Jaeseung Hwang, Jongkwan Ryu, Minjeong Song   +3 more
doaj   +1 more source

Analysis of the relationship between body habitus and frailty of community adults in Chongqing: a cross-sectional survey study

Frontiers in Public Health, 2023
ObjectiveCurrently, a multitude of studies are underway to investigate the factors affecting the degree of frailty, with a significant focus on the critical role of body mass index (BMI). This study aims to conduct a cross-sectional survey to investigate
Aini Chen, Li Ren, Su Min, Ping Li, Ke Wei, Jun Cao, Yi Tao, Feng Lv   +7 more
doaj   +1 more source

COUNTERMEASURE AGAINST HEAVY-WEIGHT FLOOR IMPACT SOUND BY STORAGE FURNITURE WITH TATAMI FOR SMALL-SCALE NURSERY SCHOOLS

AIJ Journal of Technology and Design, 2021
Ryuta TOMITA, Takuya OKANIWA, Yuta OTAKI, Kyoko ABE   +3 more
openaire   +4 more sources

Assessment of workers\' exposure to hand-arm vibration of impact wrench in heavy vehicles punctured shops and provide vibration control methods [PDF]

Salāmat-i kār-i Īrān, 2022
Introduction In today's world, with the advancement of technology, hand tools that required the physical strength of the body have given way to electric and pneumatic tools. Despite all the advantages that these tools have, there are many limitations and
mohammad zabehi, Seyed Reza Azimi Pirsaraei, roohalah hajizadeh, ramazan fallah   +3 more
doaj  

Impact Sound Reduction Performances of Additional Floor Mats for the Retrofitting of an Existing Apartment Building in Accordance with Test-Bed Conditions

Applied Sciences
Floor mats are commonly used to improve the impact sound performance of existing homes, but actual impact sound reductions do not consistently appear, as they depend on the test-bed conditions used to determine impact sound performance.
Yong-Hee Kim, Soon-Seong Moon, Jun-Oh Yeon   +2 more
doaj   +1 more source

A STUDY ON PREDICTION OF HEAVY WEIGHT FLOOR IMPACT SOUND LEVEL BY FINITE ELEMENT METHOD

Journal of Environmental Engineering (Transactions of AIJ), 2009
In this paper, we study the predicted floor impact sound level by finite element method. At first, we study the influence of the partition on the slab vibration in addition to the impedance characteristic of the partition.Following this, the influence on the slab vibration characteristic is shown by the construction of the partition.In addition, it is ...
KUME, Satoshi, ISIMARU, Takeshi, TAKAKURA, Fumihiro, YAMASHITA, Yasuhiro   +3 more
openaire   +3 more sources