1. Prof. of Civ. Engrg. and Assoc. Dir., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.
2. Prof. and Chmn., Metallurgy and Materials Engrg., Lehigh Univ., Bethlehem, Pa.
3. Research Asst., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.
4. Adjunct Prof., Mechanics, Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.