In 2013, as the eastern span replacement of the San Francisco-Oakland Bay Bridge was drawing to a close, 277 vertical steel rods to improve the seismic stability of the replacement were tested under tension using three-inch-diameter bolts. Within two weeks, 32 of the steel rods had snapped. 277 of these rods were used in the $6.5 billion construction project, but only 96 were accessible. Metal testing suggested hydrogen embrittlement during the manufacturing of the rods may have caused the failures. Thankfully, this was able to be corrected before the bridge opened, but it was a major setback in the construction.Read More…
Elemental Analysis, Separation Science, And Metallography News By LECO
November 22, 2022
October 14, 2022
Source: hpconstruction.co.uk / jewelleryfocus.co.uk
Dr. Belen Morales, Head of Analytical Services talked with LECO about how the Sheffield Assay Office serves its customers, the technologies and types of analysis employed to meet the clients' requirements, the scope of treated sample range, and the role LECO is playing in this context.
October 5, 2022
Once more expensive than gold, aluminum has not lost its value over the years, only its price tag. Thanks to revolutionary methods of production largely developed in the late 1800s, the price of aluminum dropped from $34 an ounce in 1852 ($1,276 in 2022 dollars) to just $0.09 an ounce today. As a low-density, high-strength, corrosion-resistant metal, aluminum's usefulness has led to incredible consumption in many industries from transportation to packaging.Read More…