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Vibration-induced solder joint fatigue is a main reliability concern for aerospace and military industries whose electronic equipment used in the field is required to remain functional under harsh loadings. Due to the RoHS directive which eventually will prevent lead from being utilized in electronic systems, there is a need for a better understanding of lead-free mechanical behavior under vibration...
Vibration-induced solder joint fatigue is a main reliability concern for aerospace and military industries whose electronic equipment used in the field is required to remain functional under such loading. Due to the RoHS directive which eventually will prevent lead from being utilized in electronic systems, there is a need for a better understanding of lead-free mechanical behavior under vibration...
There are considering electrical contacts of switchgears under vibration in the paper. It is assumed that vibration connects with the magnetic field from given electric current flowing through contacts. It is shown that contacts region generates hole spectrum of new added alternating currents sources under vibration. Equations to calculate parameters of mentioned additional electrical currents are...
This paper investigates the effects of loading on radial magnetic forces in a low-speed PM machine with non-overlapping concentrated windings. Vibration level of the PM machines with concentrated windings can be potentially higher compared to the traditional machines with distributed windings. It is mainly due to the presence of low order harmonics in the spatial distribution of the radial forces...
Board level package reliability under mechanical shock has always been a great concern for mobile electronic products. As a result of “short to market” demand for new electronic products, a great effort has always been made towards developing more efficient methods for reliability assessments. This paper presents a board level mechanical reliability test method based on harmonic vibration. Numerical...
Cartilage degradation or defects cause joint pain, activity obstacles, or even completely losing the joint function. At present, using many new technologies and methods for treatment clinically, but it only relieves the patients of pain. The development of cartilage tissue engineering is becoming an ideal way of permanently repairing tissue defects. Mechanical factors play a major role during the...
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