Contracts Group, Bldg 588, Mail Stop 32, Naval Air Warfare Center Aircraft Division, Patuxent River, MD 20670-5304

66 -- HIGH TEMPERATURE VISCOELASTIC MEASUREMENT SYSTEM SOL N004211-98-R-1135 DUE 032098 POC Bill Jones, Contract Specialist, (301) 342-1825 x133 The Naval Air Systems Command, Naval Air Warfare Center Aircraft Division, Patuxent River, MD plans to acquire on a firm fixed price basis a Rheometric Scientific High Temperature Viscoelastic Measurement System for the Polymers and Composites Branch, Code 4.3.4.3, Naval Air Warfare Center Aircraft Division, Patuxent River, Maryland, 20670-5304. The Strain Rheomenter is used in support of the NAWCAD Materials Division in providing NAVAIR with polymer development and characterization. This acquisition will be negotiated on a sole source basis with Rheometric Scientific, the Advanced Rheometric Expansion System (ARES), One Passumtown Road, Piscataway, NJ 08854 under the authority of FAR 6.302-1 (Only one responsible source and no other supplies or services will satisfy agency requirement. The sole source determination is based on the following factors: [A] The primary components of this system is a control strain rheometer which is used to characterize viscoelastic properties of thermosets and thermoplastic polymers. [B] The system must have the capability to perfrom dialetric measurement of polymers simultaneously with strain measurement. The properties measured are shear modulus, complex viscosity, storage modulus, loss modulus and ionic conductivity. [C] It is mandatory that the system be a controlled strain rheometer in order to be able to reexamine historical data and provide continuity in analysis for ongoing projects. [D] The new system must be compatible with the existing Rheometric RDA II system presently being used by the Materials Branch. This commanality includes sample tooling and software since the two systems together will continue to evaluate new work as well as ongoing R&D investigations. [E] The Advanced Rheometric Expansion System must be a strain rheometer with the following capabilities: [1] Dynamic Strain Sweep with a range from 0.002 to 2,000 (g-cm) torque. [2] Dynamic/Fix Frequency Range 0.00001 to at least 100 rad/sec. [3] This must be a two head system consisting of an actuator and transducer. The transducer must have both torque and normal force. The normal force must be a transient measurement. [4] The Environmental system must have a temperature range from -150 to +600 C. [5] The system must be able to perform time/cure temperature ramp, Steady state ramp, stress relaxation, step strain rate, creep and single point measurements at a given frequency and strain. [6] The tooling must be compatible with the existing Rheometric RDA II system. [7] The system must be able to perfrom dieletric thermal analysis with a frequency range of 20 Hz to 1 MHz. The system currently in use was purchased from Rheometric Scientific and uses Rheometric's proprietary software for which the government does not own the source code. In addition, there is an already existing network of personnel skilled in the operation and maintenance of the current system, which increases operational effectiveness and efficiency and reduces costs to the Government. Point of Contact at NAVAIR/NAWCAD Patuxent River is BillJones (Code 25421D), Contract Specialist, Contracts Competency, Building 588, Naval Air Warfare Center Aircraft Division, Patuxent River, MD 20670 NUMBERED Note 22 APPLIES TO THIS ACTION (0055)

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