TY - JOUR PY - 1994// TI - Heating rate modeling and measurements in phantom and in vivo of the human upper extremity in a defective 2450 MHz microwave oven JO - Journal of microwave power and electromagnetic energy A1 - Oleson, J. A1 - Samulski, T. A1 - Clegg, S. A1 - Das, Sreekanta A1 - Grant, W. SP - 101 EP - 108 VL - 29 IS - 2 N2 - Multiple door interlock switches in commercial microwave ovens are designed to prevent accidental exposure and injury. We report a) heating rate (degree/sec) measurements in a phantom of the human upper extremity in a 2450 MHz microwave oven having interlock switches deliberately bypassed; b) skin temperature measurements on the upper extremity of a human volunteer similarly exposed; c) perception of warmth and pain experienced by the volunteer during exposure; d) thermographic camera recordings of the volunteer's skin; and e) finite element modeling of specific absorption rate (SAR) in the volunteer's hand. Moderately severe pain was experienced at the fingertips after 5 sec of exposure, consistent with the modeled SAR, measured heating rates, and published data on the temperature threshold for pain. We estimate that an additional 9 sec of exposure would be required to produce irreversible injury, consisting of focal thermal injury in the fingertips and possibly the thenar and hypothenar eminences.

Language: en

LA - en SN - 0832-7823 UR - http://dx.doi.org/ ID - ref1 ER -