Results 241 to 250 of about 58,501 (293)

Possibility of High-Speed Ultrasonic Detection of the Internal Material Defects in Rails. [PDF]

Materials (Basel)
Chałko L, Antolik Ł, Rucki M, Trochta M.   +3 more
europepmc   +1 more source

Multi-scale performance, life-cycle and economic assessment of blended concrete using recycled coarse aggregates. [PDF]

Sci Rep
Chaitanya BK, Madhavi Y, Venkatesh C, Durga CSS, Gowd SC, Mitikie BB.   +5 more
europepmc   +1 more source

Enhancing Self-Healing Performance of Cement-Based Materials Through Sodium Silicate and SAP Composite Incorporation. [PDF]

Materials (Basel)
Kang Y, Wu R, Qiao Y, Xu C.
europepmc   +1 more source

Recycled aggregate size effect on shear and tensile fracture toughness of SCB Eco-friendly cemented specimens. [PDF]

Sci Rep
Dolatshahi A, Arash M, Molladavoodi H.
europepmc   +1 more source

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Image matching for pulse echo measurement of ultrasonic velocity

Image and Vision Computing, 1983
Abstract Diagnostic ultrasound is a pulse echo imaging system similar to radar, sonar or exploration seismology. It has its most widespread use in the examination of pregnancy, but also finds routine use in the examination of the organs of the upper abdomen and its use is increasing in other areas. Using current techniques the information obtained is
D. E. Robinson, C. F. Chen, Laurence S. Wilson   +2 more
openaire   +1 more source

Effect of stresses on the ultrasonic pulse velocity in concrete

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1991
Since the stress-strain curve of a concrete is not linear, at least under the first loading, one would expect that the presence of stresses would reduce the velocity of ultrasonic pulses in the concrete. The experimental investigation of this expectation is the topic of this paper.
Sandor Popovics, John S. Popovics
openaire   +2 more sources

Ultrasonic pulse velocity as a rock stress sensor

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1974
A method of measuring with nanosecond precision the times of flight of ultrasonic pulses over distances of a few metres in rock in situ has been developed by using a multiple sampling technique, with pulses repeated at intervals of 20 msec and on-line averaging of many individual readings. In an ideal situation the measurements are sensitive to changes
Gladwin M.T., Stagey F.D.
openaire   +4 more sources