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![[IMAGE-GEILOGO]](3dnew.gif)
GOSS ENGINEERS, INC. - Finite Element Analysis & R&D:
Goss Engineers, Inc.
12333 East Cornell Avenue - Unit 19
Aurora, Co 80014
Attn: John Goss, P.E. - Email for telephone number -
Email: gossengr@aol.com
![[IMAGE-GEILOGO]](geilogo2.gif)
TM
Goss Engineers, Inc. is involved in single-walled carbon nanotubes (SWNTs), carbon nanotubes (CNTs) and nanorods (NRs) for bonding polymer resins and nanostructures, and for reinforcing CMCs and ceramics with nanostructures. We have developed the ability to produce nanostructures with chemical methods and Goss Engineers, Inc. has been involved in many commercial applications for coating the combustion chamber and parts of adiabatic diesel and turbine engines. Some of the methods used for thermal spraying and thermomechanical ceramic coatings include: (1) Plasma spray, flame spray, plasma transfer arc, detonation gun, high-velocity oxygen flame and spark discharge;Chemical ceramic coating by sol-gel and slurry methods; (3) Chemical vapor deposition (CVD); (4) Anodizing; and slurry coating. In-house development of epoxy and ceramic coatings has shown that magnetic fields can control the directionality of ferric micro-particles to form ferric micro/nanotube towers and ferric layered surfaces in the epoxy resins, CMCs and ceramics. The micro/nanotube towers are generated, or grown, inside the epoxy resins/CMCs/ceramics and are magnetically pulled through the matrix to form finger-like ferric micro/nanotube towers on the surface or layered inside the matrix depending upon the required orientation and the direction of the magnetic field.
We designed a Trace Contaminate Control System for the NASA Space Station Test Cell. This included the design, manufacturing and testing of a highly efficient compact finned heat exchanger. The project involved extensive heat transfer and fluid engineering as well as computer modeling of the flow paths, inlet and outlet headers, electrical heat generation and the exchanger matrix. Thermal research was performed on the heat exchanger, flow paths, catalysts, heat transfer surfaces, insulation and mechanical components under consideration for this design. The use of phase change materials in the heat exchange module to control and modulate the heat flow was researched and proposed. This expanded our ability to work with advanced compact heat exchangers, heat exchanger fins and technical ceramics. This led to several advanced commercial heat exchanger and thermal fin design and analysis.
One of our commercial projects with Coors Ceramics led to the development of a method to connect large diameter shafts to mill heads to replace the weldments that were causing many high cost failures on the assembly lines. The new method eliminated all the failures and led to several million dollars in maintenance and "down time" savings. This led to a Department of Energy project involving advanced ceramics. Goss Engineers, Inc. completed a DOE project which developed a new method to replace high temperature welds with ceramic locking assemblies to join mill heads to shafts. We developed computational fluid dynamics (CFD), heat transfer, thermal stress and mechanical stress FEA and kinematic models to examine the behavior of the system under physical and thermal loading conditions. As a result of this, we have become involved in the analysis and development of high tech ceramic products. The ceramic coupling works very well and has a heat blocking affect. Since the completion of this project we have been involved in patenting, marketing and manufacturing this product. The manufacturing design process and the manufacturing process have led to several new products and customers which have met our return in investment capital.
As a result of our experience in heat transfer and fluid flow analysis, we were awarded an Army project. Goss Engineers, Inc. This project examined current technology in compact heat exchanger and radiator designs. Computational Fluid Dynamics (CFD), heat transfer and thermal stress models were developed to examine the significance of several engineering areas which included: fin design, tube design, inlet design, outlet design, header design, lance offset design, two-phase flow, advanced heat transfer liquids, and improved metals. Alloy steel, carbon steel, aluminum and ceramics were examined and other materials such as plastics, composites and ceramic composites were studied for thermal efficiency and thermal strength. The use of phase change materials for fins and tubes to enhance and modulate heat transfer was researched. This led to several interesting designs for commercial customers. An extensive analysis of existing and new gas fin designs was undertaken. This involved studying common shaped fins such as rectangular ribs and new shapes such as square fins with wall, rectangular fins with wall, double square fins, double round fins, lance offset and other shapes. Also included in this study was an analysis of fin density and fin length. The Gas Fin Design study verified most of the common engineering beliefs that fin engineers have observed over the years. This project opened up many new and important thermal and fluid flow opportunities to us. This led to several advanced commercial thermal fluid, thermal efficiency and thermal fin analysis projects.
In 2004 we completed a project for the Navy that developed an innovative and efficient ceramic/metal thermal gradient gun barrel that provided a nonlinear to linear gradient in material and density from a fully ceramic interior to a fully metallic exterior. We developed a barrel insert and magnetic slip/pour casting process to fabricate a ceramic material that gradually changed from pure ceramic at the bore, through a mixed ceramic-metal matrix, to a nearly pure metal. This ensures a strong bond between the ceramic and metal while spreading the thermal/mechanical stresses through the gradient area. The metal outer layer interfaces with a conventional metal or composite barrel. Pour or slip casting of a fine steel whisker-toughened ceramic subjected to a centrifugal rotation and magnetic fields produced a linear distribution of the ceramic matrix from a pure ceramic to a sintered metal. The ceramic/metal gradient material can be used for 5-inch, 155 mm, or 8-inch barrel liners. The ceramic/metal gradient gun barrel reduces life cycle costs by extending barrel life, eliminating spares and reducing inventories. Theoretical development, modeling, experiments and barrel prototypes developed during Phase I have demonstrated the feasibility of our approach. This new material design technology can be manufactured at a comparable cost to the materials currently used by the military and can be retrofitted to existing weapons. Since the completion of this project we have been involved in patenting, marketing and manufacturing this product. The manufacturing design process and the manufacturing process have expanded our marketing into undeveloped areas for both the military and commercial in high strength ceramic products.
Goss Engineers, Inc. completed a Phase I SBIR for DOD (Air Force) that developed ceramic metal composite (CMC) ball and roller bearings and a magnetic slip casting process to fabricate a material that will gradually change from pure ceramic at the center, through a mixed ceramic-metal matrix, to a nearly pure metal on the surface ensuring a strong bond between the ceramic and metal while spreading the thermal/mechanical stresses through the gradient area of the ball bearing. During the Phase I project, 2 inch, 3 inch and 4 inch diameter whisker-toughened ceramic linear gradient ball and roller bearings were made using a magnetic fabrication process. Additionally, we were able to make 2 inch, 3 inch and 4 inch diameter solid CMC giant ball and roller bearings. Currently being developed at our facility are CMC and ceramic giant ball and roller bearings for earthquake structures and blast resistant structures. Manufacturing capability at CoorsTEK enables us to make bearings up to 72" in diameter.
Goss Engineers and the Principal Investigator have been involved in research and development in explosive designing and modeling of reinforced storage bunkers, containers, pressure vessels and explosive testing stations for Stearns-Roger, Special Devices Inc., OEA Inc., Rocky Mountain Arsenal, Sandia Lab and Summit Equipment. This included extensive involvement with advanced explosive modeling, shock wave modeling and dynamic analysis of igniters for automotive air bags and other explosive devices.Our R&D involvement has led to many innovative high pressure thermal, fluid flow, thermal system and thermal product designs. We have designed thermal systems and products for the Gates Rubber Company, Stearns-Roger, Bechtel, Sandia Lab, Dunlop Tire and Rubber, Carborundum, DOD, DOE and NASA.
Goss Engineers and the Chief Principal Investigator, John Goss, have been involved with the commercialization of many new products, some include:
(1)
Whiskered ceramic gradient material, Goss Engineers, Inc.
(2) High temperature ceramic fan, Goss Engineers, Inc.
(3) Magnetic layering of whiskered ceramics, Goss Engineers, Inc.
(4) Metal locking assemblies, Goss Engineers, Inc.
(5) Commercial development of computer program Ceramic Stress
Analyzation Program/ CSAP, Goss Engineers, Inc.
(6) Commercial development of several FEA and CFD computer codes.
(7) Bone fuses for Gates Rubber Company.
(8) Molded sea products for Gates Rubber Company.
(9) Hard rubber rice hullers for the Gates Rubber Company.
(10) Several military containers for Stanley Aviation, Inc.
(11) Aircraft ground support equipment for Stanley Aviation, Inc.
(12) Fuel couplings for Stanley Aviation, Inc.
(13) Wheelchair lifts for Neoplan and Stewart and Stevenson, Inc.
(14) Advanced wheelchairs for Sunrise Medical, Inc.
(15) Cryogenic transport trailers for Cryenco Inc.
(16) Polyethylene valve for Nordstrom Valve Corp.
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