The Integrated Particulate Composite Analyzer (ICAN/PART) computer program is a modified version of the Integrated Composite Analyzer (ICAN) program (LEW-15592/LEW-15832), which was developed to conduct analyses of the micromechanics of fiber-reinforced polymer-matrix composite materials. ICAN/PART is a computationally efficient computer code that can be used by engineers in both aerospace and nonaerospace fields to characterize and design particulate-reinforced composite materials. These composites are useful in circumstances in which multi-phased materials are desired but the costs and difficulties of manufacturing continuous-fiber-reinforced composites are too great.

ICAN/PART can compute the effective properties and constituent microstresses of a particulate-reinforced composite as well as of a fiber-reinforced composite that includes a particulate-reinforced matrix material. The user obtains preliminary information on the order of magnitude of stresses that will be found in a given load state. If more-detailed information about the specific stress levels in specific locations of a composite-material object is required, a detailed finite-element model could then be constructed and analyzed.

The manner of using ICAN/PART is very similar to that of the original ICAN code. ICAN/PART includes a provision for a dedicated data bank that enables the user to build a database of properties of commonly used particle and binder materials. The user need only specify code names for constituents. Input includes code names or properties of constituent materials, and factors that reflect the process of fabrication and the geometry of the composite-material object. Output includes the various ply and composite properties, composite structural response, and composite-stress-analysis results with details of failure.

ICAN/PART is written in FORTRAN 77. Two machine versions are available. The UNIX-based version, LEW-16460, has been successfully implemented on a Sun4 SLC computer running SunOS 4.1.3_U1, a Sun4 IPC running Solaris 2.4 (SunOS 5.4), and an SGI Indigo2 computer running IRIX 6.2. The IBM PC-based version, LEW-16484, has been successfully run on a '486 microprocessor running MS-DOS 5.0, a '486 microprocessor running Windows95, and a Pentium microprocessor running Windows95. The code has been successfully compiled under Microsoft's Fortran Powerstation 1.0. A sample executable code is provided. The standard distribution medium for the UNIX-based version is a 3.5-in. (8.89-cm), high-density diskette in UNIX TAR format. The standard distribution medium for the IBM PC version is a 3.5-in. (8.89-cm), high-density diskette in PC format. Alternate distribution media are available on request. ICAN/PART was released to COSMIC in 1997.

This program was written by P. L. N. Murthy and R. K. Goldberg of Lewis Research Center and S. K. Mital of the University of Toledo. For further information on the UNIX version, access the Technical Support Package (TSP) free on-line at www.techbriefs.com under the Computer Software category, or circle no. 110 on the TSP Order Card in this issue to receive a copy by mail ($5 charge). LEW-16460

For further information on the IBM PC-based version, access the Technical Support Package (TSP) free on-line at www.techbriefs.comunder the Computer Software category, or circle no. 121 on the TSP Order Card in this issue to receive a copy by mail ($5 charge). LEW-16484

NASA Tech Briefs Magazine

This article first appeared in the January, 1998 issue of NASA Tech Briefs Magazine.

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