A piezoelectric load-sensing washer currently under development provides a more accurate way to measure the clamping force exerted by the bolt it is on. A piezoelectric load-sensing washer being ...

RAILWAY AGE, OCTOBER 2023 ISSUE: Rail fastening system technology continues to evolve, delivering a tight hold and longer track life in heavy-haul freight, high-speed passenger rail and transit ...

A bolt that loses its clamping force is next to useless, and many of today’s common methods for securing bolts fall in that same category, according to the engineers at Nord-Lock Inc., Muskegon, Mich.

Workers often tighten bolts to 75% to 80% of the bolt proof load. This works for many joints, but in some cases, external tensile loads reduce bolt clamping forces to zero. Something other than the 75 ...