Results 31 to 40 of about 125,940 (281)
Sensors, 2021 Schmidt rebound hammer test was employed in this study as a nondestructive test. This test method has been universally utilized due to its non-destructiveness for quick and easy assessment of material strength properties and quality of concrete of an ...
Temple Chimuanya Odimegwu +5 more
doaj +1 more source
MachinesThe objective of this study is to analyze the piston rebound energy storage characteristics of the nitrogen-hydraulic combined impact hammer and to investigate the manner in which the piston rebound energy is converted and utilized.
Hu Chen, Boqiang Shi, Hui Guo
doaj +1 more source
Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers
Advanced Functional Materials, EarlyView.We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang +12 more
wiley +1 more source
The rate of viral rebound after attainment of an HIV load < 50 copies/mL according to specific antiretroviral drugs in use: Results from a multicenter cohort study [PDF]
, 2005 Background. Relatively few data are available on the association between the use of specific antiretroviral drugs and the rate of viral rebound in those attaining a viral load (VL) 500 copies/ mL).
Smith, CJ +16 more
core +1 more source
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
Determine the Compressive Strength of Calcium Silicate Bricks by Combined Nondestructive Method
The Scientific World Journal, 2014 The paper deals with the application of combined nondestructive method for assessment of compressive strength of calcium silicate bricks. In this case, it is a combination of the rebound hammer method and ultrasonic pulse method.
Jiri Brozovsky
doaj +1 more source
Investigation of RC-DTH air hammer performance using CFD approach with dynamic mesh method
Journal of Advanced Research, 2019 Reverse circulation down-the-hole (RC-DTH) air hammers have been widely used in construction and mining activities owing to their high drilling efficiency and good dust control performance.
Xinxin Zhang +4 more
doaj +1 more source
Assessment of Concrete Strength Using the Combination of NDT—Review and Performance Analysis
Applied Sciences, 2022 This paper presents a review on combining NDT techniques, such as rebound hammer and ultrasonic pulse velocity, for assessing concrete compressive strength.
Bouchra Kouddane +6 more
doaj +1 more source
Durability of Soft Pneumatic Actuators: A Review and Benchmarking Protocol
Advanced Robotics Research, EarlyView.Lack of durability is a key challenge hindering the broad scale adoption of soft pneumatic actuators (SPAs) in automation industries. This review provides a comprehensive overview of existing research on SPA durability, introduces a standardized durability benchmarking protocol to consolidate the testing of SPAs, and outlines promising directions for ...
Dickson Chiu Yu Wong +2 more
wiley +1 more source
Anisotropy effect on strengths of metamorphic rocks
Journal of Rock Mechanics and Geotechnical Engineering, 2018 This paper aims to study the effect of anisotropy on strengths of several metamorphic rocks of southern (Çine) submassif of Menderes metamorphic massif in southwest Turkey.
Ahmet Özbek +3 more
doaj +1 more source