Results 111 to 120 of about 216,422 (329)
A Novel Condition Monitoring Technique for Mining Ground Engagement Tools via Modal Analysis
EngGround engaging tools (GETs) are critical consumable components on mining excavators, and their timely replacement is essential to prevent risks and excessive downtime.
Shasha Chen +5 more
doaj +1 more source
Advances in Materials Science and Engineering, 2019 In this study, an ultrahigh drop hammer impact test system was adopted for multiple horizontal impact tests on stainless steel-reinforced concrete columns and ordinary-reinforced concrete columns with the same longitudinal reinforcement diameter.
Bo Wu, Shixiang Xu, Guoxue Zhang
doaj +1 more source
In Situ Measurements of Interfacial Contact Pressure During Impact Hammer Tests [PDF]
Understanding the nonlinear dynamical contact interactions within joints is crucial for understanding and predicting the dynamics of assembled structures. In spite of this, most experimental investigations focused on the global vibration behavior, since the local interactions at the interface cannot be observed with standard techniques.
B. Seeger +5 more
openaire +1 more source
An Estimation of Error-Free Frequency Response Function from Impact Hammer Testing
JSME International Journal Series C, 2004 The spectrum of impulse response signal from the impact hammer testing is widely used to obtain the frequency response function (FRF). However the FRFs obtained from the impact hammer testing have not only leakage errors but also finite record length errors when the record length for the signal processing is not sufficiently long.
Se Jin AHN, Weui Bong JEONG, Wan Suk YOO
openaire +2 more sources
Advanced Science, EarlyView.To overcome severe signal oscillation under extreme impact conditions, this work presents a Sensing‐in‐Energy microdevice which integrates a MEMS inertial structure directly within a supercapacitor electrolyte cavity. Utilizing shock‐driven transient contact and electrolyte damping for signal self‐filtering, it achieves weak‐oscillation, large ...
Zhihao Zheng +7 more
wiley +1 more source
Cogent EngineeringThis research explores the effects of moisture absorption on the mechanical and vibrational performance of Kevlar-basalt/epoxy laminates, which are significant for their strength-to-weight ratio yet susceptible to hygrothermal aging.
Fardeen Shaikh +3 more
doaj +1 more source
Advanced Science, EarlyView.This study first extends the high‐entropy concept to I‐III‐VI quantum dots (QDs) and synthesizes CZCrGSe/ZnSe/ZnS core/shell/shell QDs with a record photoluminescence quantum yield (PLQY) of 100%. Their ZnSe/ZnS double shell efficiently passivates defects and boosts structural stability.
Maoyuan Huang +9 more
wiley +1 more source
Media Komunikasi Teknik Sipil, 2016 The change of temperature is quite high, as was the case in the event of a fire, it will have an impact on the concrete structure. Because in the process there will be a cycle of alternately heating and cooling, which would lead to a change in phase of ...
Weka Indra Dharmawan +2 more
doaj +1 more source
Galaxy Mass Assembly with VLT & HST and lessons for E-ELT/MOSAIC
, 2014 The fraction of distant disks and mergers is still debated, while 3D-spectroscopy is revolutionizing the field. However its limited spatial resolution imposes a complimentary HST imagery and a robust analysis procedure.
Flores, H., Hammer, F., Puech, M.
core +1 more source
Rejuvenated Amorphous Alloys: Processing Methods, Microstructures and Mechanical Properties
Advanced Science, EarlyView.Three rejuvenation methods – mechanical and thermal rejuvenation, and other rejuvenation routes such as ultrasonic processing – can be used to modify structures of glassy alloys, especially atomic clusters, and therefore enhances plasticity and activates work‐hardening behaviors.
Can Yang +10 more
wiley +1 more source