Results 341 to 350 of about 302,242 (373)

Micromechanical Modelling of Acoustic Emissions

SPE/ISRM Rock Mechanics in Petroleum Engineering, 1998
Abstract Micromechanical models of high porosity chalk and low porosity granite are presented to examine the mechanics of cracking and failure that occur in the rocks when they are subjected to stress. The models are run dynamically (with low numerical damping) to allow for dynamic fracture propagation and so that ...
J.F. Hazzard, S.C. Maxwell, R. P. Young
openaire   +2 more sources

Numerical Calculations of Acoustic Emission

Journal of Nondestructive Evaluation, 1987
Two computer programs which solve the partial differential equations for sound propagation numerically are applied to the study of problems in acoustic emission. The programs use finite difference and finite element techniques to calculate sound fields due to distributions of sources in complex geometries in two dimensions. The potential to handle more
openaire   +2 more sources

Deconvolution for Acoustic Emission

1986
A new technique is presented for deconvolution of time series (digitally recorded temporal waveforms) such as obtained in acoustic emission. The method, called cross-cut deconvolution, combines two different least squares methods—one completely new, the other a recently developed variant of singular valued decomposition—to produce a potentially robust ...
openaire   +2 more sources

Acoustic emission

Physics in Technology, 1979
M. Ahmed, R. W. B. Stephens
openaire   +4 more sources

Acoustic Emission in Composites

1989
The term ‘acoustic emission’ (AE) is applied in a broad sense to the sounds which are internally generated in a material which is under stress. AE testing is relatively simple with only a sensor (usually piezoelectric), basic signal-analysis equipment (amplifier, filter, data-processing equipment) and some means of loading the structure needed.
openaire   +2 more sources

Amplitude measurement in acoustic emission

Review of Scientific Instruments, 1985
A circuit capable of measuring the amplitude of continuous emission and acoustic bursts is presented. The circuit shows linear behavior (+/−5%) over a dynamic range in excess of 65 dB, for frequencies up to 250 KHz. Possible applications are discussed.
openaire   +3 more sources

Molecular imaging in oncology: Current impact and future directions

Ca-A Cancer Journal for Clinicians, 2022
Martin G Pomper, Steven P Rowe
exaly  

Radiotheranostics in oncology: Making precision medicine possible

Ca-A Cancer Journal for Clinicians, 2023
Eric O Aboagye
exaly  

Metabolomics in cancer research and emerging applications in clinical oncology

Ca-A Cancer Journal for Clinicians, 2021
Daniel R Schmidt, David G Kirsch, Caroline A Lewis   +2 more
exaly  

Peripheral Decoration of Multi‐Resonance Molecules as a Versatile Approach for Simultaneous Long‐Wavelength and Narrowband Emission

Advanced Functional Materials, 2021
Yang Zou, Xiaosong Cao, Shaolong Gong
exaly