thermal meters (Type K, ROHS) and computer recording system connected with a data-logger.
In this heating test, infrared lamp was used as heating source, while the hollow PVC envelope with reflective paper coated
inside was used for creating a uniform and steady temperature field.
It should be noted that an opening in central position of wooden-box top surface was made for placing sample. Fig. 3b and c
illustrates top view of sample arrangement.