Re: [Texascavers] Kevlar related

2014-06-22 Thread Don Cooper
When commercially available kevlar first appeared on the scene, small kevlar cords were put into use on sport parachutes. Before even 100 uses, some jumpers experienced line-breaks. It was a surprise, as the very thin kevlar lines were supposed to be over twice the strength of the polyester

Re: [Texascavers] Kevlar related

2014-06-21 Thread Kevin McGowan
I use Kevlar for the foot loop on my frog system for years. I worked great. KM Sent from mobile device Kevin McGowan Photography 5250 Gulfton, Suite 2F Houston TX 77081 Studio: (713) 665-3818 Cell: (281) 433-2474 On Jun 21, 2014, at 12:42 AM, David dlocklea...@gmail.com wrote: In

[Texascavers] Kevlar related

2014-06-20 Thread David
In the news today, it was announced that the chemist credited with the discovery of Kevlar, has passed away. Stephanie Kwolek was her name. Sometime around 1986 or 87, I was taking a materials science course at AM and had access to a tensile-test machine.I asked the professor if I could test