Resource www.renegadematerials.com 68 SAMPE Journal, Volume 47, No. 2, March/April 2011http://www.ndts.com http://www.ndts.com http://www.newportad.com http://www.newportad.com http://www.PCComposites.com http://www.PCComposites.com http://www.trustsm.com http://www.renegadematerials.com http://www.trustsm.com