SBIR 95-1 SOLICITATION
PROJECT SUMMARY
Proposal Number:
Project Title:
FRACTURE ANALYSIS OF MMCS PRODUCED BY THE APICTM PROCESS USING LASER MOIRE INTERFEROMETRY
Technical Abstract:
This proposed effort features two innovations: 1)
Characterization of the fracture process of metal matrix
composites (MMCs) by laser Moir interferometry and, 2) the
application of that technique to microstructural improvement of a
unique class of materials manufactured by the APIC (Advanced
Pressure Infiltration Casting) process. This effort will
characterize the fracture properties of selected MMCs that have
potential use in launch structures. The primary objective is to
characterize mode I fracture behavior of three highly loaded
particulate Al matrix composites (Alumina, SiC, B4C
reinforcements) and one continuous fiber reinforced (Nextel 610TM)
Al alloy. Precracks will be placed in specimens and fractures will
be analyzed using a fiber optic two-beam Moir interferometer.
Phase shifting enhancements to this technique will be made which
are unique to Idaho National Engineering Lab, APIC features
near-absolute net-shape casting of composite components that
require zero machining for most applications. As a result of this
process and its efficiencies, APIC is lower in cost than any
other MMC process. Design integration and database generation of
MMCs are also featured. This program will increase the basic
knowledge of fracture and life of structures made from MMCs, the
lack of which has retarded their usage.
Potential Commercial Applications:
Launch vehicle and satellite structures, propulsion and structural
components for commercial aerostructures, sporting goods, and
automotive engine and suspension components. Connecting rods for a
Ferrari Formula One engine, for example, have been cast by MMCC
Inc. and reduced mass from 585g to 190g - a weight savings of
67.5%. Automotive braking system components alone could result in
a $4B world wide business.
Name and Address of Offeror:
METAL MATRIX CAST COMPOSITES, INC.
101 Clematis Avenue, Suite 1
Waltham, MA 02154
Small Business Innovation Research Program (SBIR) &
Small Business Technology Transfer Program (STTR) Programs
Electronic Management System (EMS)
National Aeronautics and Space Administration (NASA)
The SBIR/STTR EMS site is maintained by Steve
Hu, Hughes STX.
For comments and questions, contact
webmaster@sbir.hq.nasa.gov.
Updated: Feb. 7, 1996