The cracking appears to form a "slip band" effect, or standard solder fatigue cracking, due to the -40[degrees] to 125[degrees]C thermal exposure
. There was no evidence of cracking caused by processing defects.
While CTP imaging is to commence on DuPont Silverlith SDB plates, "We haven't abandoned that search" for a suitable thermal plate," said Reynolds, noting that the DMX can be upgraded on site for thermal exposure
. The conversion capability, he said, is what makes the yttrium-aluminum garnet (YAG) laser so attractive.
2-4 shows that at each of the chosen T's, the first thermal exposure
is accompanied by a reduction in the unit-cell parameters and a subsequent increase.
The extra thermal exposure
due to double reflow and wave soldering did not cause any significant decrease in shear strength when compared to a single reflow Pb-free process.
However, in terms of thermal exposure
, the situation is superior to SnPb.
As the polymer materials are increasingly damaged by radiation or thermal exposure
, the amount of antioxidant is decreased and the OIT shortens to a length indicative of the relative degradation.
Since soldermask has a large curing window, most vendors try to optimize the process to hit the midrange of the cure, but due to the cure mechanisms for liquid photoimageable masks we see variations in the Stouffer settings and intensity, and in the thermal exposure
permitting the oven to recover fully.
But as we have shown, this brief thermal exposure
does not cause a data retention problem.
According to this standard, the flame resistant and retardant garments must not contribute to burn injuries of the wearer, provide high-degree of protection, and reduce severity of burn injuries that result from short-term thermal exposure
or accidental exposures to flash fires.
All pigs were monitored for physiological signs of HS including respiration rate and rectal temperature three times daily at 09:00 h, 13:00 h, and 16:00 h during the 7-d thermal exposure
The UTCI covers the full thermal exposure
range (i.e., both cold and heat exposure) and is categorized into a basic 10-class human thermal stress scale.
The Federal Trade Commission (FCC) regulations regarding cell phone and WiFi safety are based on thermal exposure
to electromagnetic radiation.