WASHINGTON — An F-35 engine failed during a pre-delivery test due to a vibration problem in March 2020, nearly three years before a similar issue caused an alarming fighter mishap in Fort Worth, Texas ...

An F-35B Lightning II aircraft launches from the amphibious assault carrier USS Tripoli on Aug. 30. Deliveries of new F135 engines for the fighters were suspended after an F-35B's Dec. 15 mishap in ...

Even with simulation, critical failure modes like resonance-induced fatigue and connection looseness can emerge during ...

Stepmotors are one of the most robust yet intricate motion-control products available. Although these motors are an engineering marvel, there are times when their performance just can’t cut it. All ...

There are natural frequencies in all equipment that have components. Generally, they exist in the 8 to 200 Hz environmental spectrum. Figure 46.1 demonstrates the transmissibility and resonant ...

Many readers probably think “black magic” describes the math involved in finding the dynamic response of a structure from random excitation. When can you be sure you have jumped through all the ...