One of the challenges confronting oil and gas operators — especially those working in areas with low fracture gradients or weak formations such as the Delaware, Anadarko and Permian Basins — is ...

Currently, the rebound hammer is widely used for estimation of compressive strength of concrete as general testing method. Although rebound hammer has made great contribution for compressive strength ...

Ultra-high performance concrete (UHPC) is an enhanced fibrous and cementitious concrete with high compressive strength (120–250 MPa) particle packing density (0.825–0.855, tensile strength (15–20 MPa) ...

A line of low-index, high-pressure compression springs consists of 144 slender parts packed with high-load capacities, rated to pressures of 300, 400, and 500 psi. The springs, made from 17-7PH ...

Measuring the in-situ compressive strength of concrete in final structures is an essential but challenging process. Coring combined with non-destructive rebound hammer measurements provides the most ...

Los Angeles could have to rebuild over 30% of the city. California has fires, earthquakes, high winds and other risks. Replacing hundreds of billions in residential and commercial buildings and roads ...

A new generation of refractory alloys with excellent high-temperature performance is urgently demanded for aero-engines, gas turbines, and nuclear power plants. As the service temperature of their hot ...

The aerospace industry has been experiencing a period of strong growth. The latest generation of efficient aircraft have helped reduce fares, allowed more non-stops and new city pairs, and enabled the ...

President, Wyoming Test Fixtures Inc. In my October 2015 column, I compared three V-notched shear test configurations used to measure the shear stiffness and shear strength of composite materials: The ...