SAMPE Orange County Meeting Notice
Wed., Nov 18th, 2015 at 6 p.m.
"The influence of Prepreg Architecture on Part Quality for Vaccum Bag Only Processing"
Dr. Lessa K. Grunenfelder
University of Southern California
Conventional vacuum bag only (VBO) prepregs are designed with engineered vacuum channels (EVaCs) to facilitate in-plane air removal during low-pressure cure. However, through-thickness permeability in such prepregs is negligible, requiring air removal almost exclusively via the EVaCs. In this work, a new prepregging technique is employed which results in increased through-thickness permeability, promoting removal of inter-ply air and gasses. The prepreg architecture features enhanced through-thickness permeability, in comparison with conventional VBO prepregs. This talk will describe the fabrication and characterization of composite laminates made with this prepreg system, as well as control samples fabricated using a traditional prepreg design. Results show that surface and internal porosity are highly dependent on prepreg architecture, and that the introduction of through-thickness permeability can improve part quality in a range of manufacturing situations.
Dr. Lessa Grunenfelder received her PhD in Materials Science in 2012, from the University of Southern California. Her dissertation focused on defect reduction in low-pressure processing of carbon fiber composites. Following completion of her PhD, Dr. Grunenfelder held a position as a postdoctoral scholar at the University of California, Riverside, studying biological composites and biomimetic materials. She returned to USC in 2014 to complete a second postdoc, conducting research on next generation composite materials. Dr. Grunenfelder is now full time teaching faculty at USC. She is an active member of SAMPE, participating as a judge in student competitions and as a conference category chair.
NEW - Location - NEW
Sunny's Family Restaurant, 7148 Edinger Ave., Huntington Beach, CA, 92647
Beach Blvd. Exit - South towards Huntington Beach, Pass Center and a right on Edinger Ave.
Phone 714-841-9934 GoogleMap Link
6:00 pm Social • 7:00 pm Dinner • 8:00 pm Speaker — Member or guest dinner $20.
Student (with student ID) dinner $10. No cost for Program only.
Reservations:: E-mail Joyce Lentz,
NASCOCEO@aol.com, Phone: 949-240-6353
December 20th Meeting - Newport Boat Parade !
or Fill out our Online Form
Reservations are now available for our annual Christmas Party. We will cruise Newport harbor and enjoy the Newport Harbor Parade of Lights. We will meet at Daveys Locker in Balboa at 4:00 pm. We will be back at the dock around 7:30pm. At 9pm there will be a fireworks display off the Balboa Pier. Come early to make sure you can park.
Reservations fill up early, call now! Please contact Joyce Lentz at National Aerospace Supply 949-240-6353 to make your reservation. Fee is $25.00 per person.