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Marquez innovates aircraft TPCs
Marquez (Montréal, Québec, Canada) supplies TPC ducting for The Boeing Co.’s 787 Personal System Unit (PSU), and the TPC structural window bezel used on all Bombardier (Montréal, Canada) Global Express business aircraft.
Read MorePerformance requirements: CAI vs. OHC
John Russell, who manages nonautoclave research programs for the Air Force Research Laboratory (AFRL, Wright-Patterson AFB, Ohio), recently threw down the gauntlet at the Fall SAMPE conference in Salt Lake City, Utah: “Give us a 25 percent improvement in notch properties with no microcracking in high-modulus fibers.” While OOA prepreg suppliers can’t do much about fiber microcracking, Advanced Composites Group (ACG, Tulsa, Okla.) already has announced that its XMTM47 material will be commercial by next year, designed for 120°C/248°F service with the increased notched performance requested.
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Out-of-autoclave prepregs: Hype or revolution?
Oven-cured, vacuum-bagged prepregs show promise in production primary structures.
Read MoreOld is new in vacuum bonding honeycomb sandwich
In Care and Repair of Advanced Composites (published by the Warrendale, Pa.-based Society of Automotive Engineers in 1997), Dr.
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CFRP upgrades economy seating
First aircraft seat to use visible CFRP revolutionizes aesthetics and comfort.
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Double-bag infusion: Thickness gradient and pressure
Cliff Walker (Vacmobiles, Auckland, New Zealand), explains how the large pressure changes during infusion result in laminate compression and thickness variations across the part.
Read MoreAbsolute vacuum gauge
The following is an excerpt from Issue 12 of The Composites Letter, published by www.vacmobiles.com (reposted here by permission) that outlines the importance of using an absolute vacuum gauge to measure pressure levels during double-bad infusion:“Often called a precision vacuum gauge, an absolute gauge actually works the opposite way to a conventional dial type vacuum gauge.
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Double-bag infusion: 70% fiber volume?
A double vacuum-bag system and tight process control enable repeatable fiber volumes of 60 to 70 percent and improves consistency of infused laminates.
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IBEX 2010: Looking up in Louisville
A new location helps regenerate a recession-battered industry, drawing in more exhibitors and attendees than in 2009.
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Besting Big Ben: A Marvel in Makkah
Composite design makes possible the world’s largest clock and tallest clock tower.
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