The fretting performance of self-piercing riveting joining dissimilar sheets in TA1 titanium alloy and H62 copper alloy was studied in this paper. Load-controlled cyclic fatigue tests were carried out using a sine waveform and in tension-tension mode. Scanning electron microscopy and energy-dispersive X-ray techniques were employed to analyze the fretting failure mechanisms of the joints. The e...

Chemotherapy, one of the mainstays of cancer treatment today, was pioneered at Yale during World War II. Last year, two Yale surgeons, Drs. John Fenn and Robert Udelsman, sought to unearth the mystery surrounding the discovery of chemotherapy and its first use at Yale. The first chemotherapy patient is known only as JD in the literature, and without a name, date of birth, or medical record numb...