Results 21 to 30 of about 145,679 (305)
Rebound hammer tests of high-strength concrete: Effects of internal stress and the shape of the impact area of the test specimens on the measurement results [PDF]
, 2019 This study examines the factors affecting the results of non-destructive testing of high-strength concrete performed on cubes and on cylinders and examines the processing of calibration relations.
Bodnarová, Lenka +2 more
core +2 more sources
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
On an Impact Testing Machine of Drop Hammer Type
journal of the Japan Society for Testing Materials, 1961 In order to research on the behaviors of destruction of carbon steel forgings by impact bending, we designed an impact testing machine of drop hammer type. The total height of this testing machine is about 5m. The weights of the used drop hammers are 12.5, 25 and 50kg respectively. The maximum distance from the position of test piece to the drop hammer
Sadatoshi INADA +2 more
openaire +2 more sources
Estimation of the normal contact stiffness for frictional interface in sticking and sliding conditions [PDF]
, 2019 Modeling of frictional contact systems with high accuracy needs the knowledge of several contact parameters, which are mainly related to the local phenomena at the contact interfaces and affect the complex dynamics of mechanical systems in a prominent ...
Baillet, L. +4 more
core +1 more source
Low frequency damping of metal panels in ambient Air [PDF]
, 2008 Mathematical models of structural dynamics are widely used and applied in many branches of science and engineering and it has been argued that many of the shortfalls with these models are due to the fact that the physics of joint dynamics are not ...
Aglietti, G.S. +2 more
core +2 more sources
Rayleigh damping parameters estimation using hammer impact tests
Mechanical Systems and Signal Processing, 2020 Abstract Structural Health Monitoring (SHM) systems for aerospace applications are becoming more prevalent and its potential cost-benefit relation is rapidly improving as more structures that were traditionally made with metallic materials are gradually being replaced by composites.
Sánchez Iglesias, Fernando +1 more
openaire +2 more sources
Advances in Mechanical Engineering, 2021 In the present study, based on the previous impact resistance test study results regarding stainless steel reinforced concrete beams, six steel fiber stainless-steel reinforced concrete (SFSRC) beams were subjected to drop-hammer impact tests using an ...
Xiwu Zhou, Wen Zhang, Xiangyu Wang
doaj +1 more source
Railway Ballast Diagnose through Impact Hammer Test
Procedia Engineering, 2011 AbstractThis paper reports a feasibility study in the use of measured modal parameters of in-situ concrete sleepers to detect possible damage of the underlying railway ballast. There are many methods developed for monitoring and damage detection of the rail track.
Lam, H.F., Wong, M.T.
openaire +1 more source
THE STUDY OF ROAD PAVEMENT PERFORMANCE THROUGH IMPACT HAMMER TESTS
International Conference “Environmental Engineering”, 2020 Noise pollution has become an important issue. One of the main sources of noise in residential areas is represented by transportation and by the interaction between tyre and road surface. Several studies illustrate that traffic noise is affected by road properties such as acoustic absorption, surface texture, and mechanical impedance.
Filippo Giammaria Pratico +2 more
openaire +3 more sources
Pendulum impact hammer tests on glued laminated timber beams
, 2022 Report / Institute of Structural Engineering ETH Zurich, 2022 ...
Cao, Alex Sixie +3 more
openaire +3 more sources