Significance and Use 5.1 Thermal diffusivity is an important transient thermal property, required for such purposes such as design applications, determination of safe operating temperature, process control, and quality assurance. 5.2 The flash method is used to measure values of thermal diffusivity, α, of a wide range of solid materials. It is particularly advantageous because of simple specimen geometry, small specimen size requirements, rapidity of measurement and ease of handling. 5.3 Under certain strict conditions, specific heat capacity of a homogeneous isotropic opaque solid specimen can be determined when the method is used in a quantitative fashion (see Appendix X2). 5.4 Thermal diffusivity results, together with related values of specific heat capacity (Cp) and density (ρ) values, can be used in many cases to derive thermal conductivity (λ), according to the relationship: Scope 1.1 This test method covers the determination of the thermal diffusivity of primarily homogeneous isotropic solid materials. Thermal diffusivity values ranging from 0.1 to 1000 (mm)2 s-1 are measurable by this test method from about 75 to 2800 K. 1.2 Practice E2585 is adjunct to this test method and contains detailed information regarding the use of the flash method. The two documents are complementing each other. 1.3 This test method is a more detailed form of Test Method C714, having applicability to much wider ranges of materials, applications, and temperatures, with improved accuracy of measurements. 1.4 This test method is intended to allow a wide variety of apparatus designs. It is not practical in a test method of this type to establish details of construction and procedures to cover all contingencies that might offer difficulties to a person without pertinent technical knowledge, or to restrict research and development for improvements in the basic technique. 1.5 This test method is applicable to the measurements performed on essentially fully dense (preferably, but low porosity would be acceptable), homogeneous, and isotropic solid materials that are opaque to the applied energy pulse. Experience shows that some deviation from these strict guidelines can be accommodated with care and proper experimental design, substantially broadening the usefulness of the method. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 For systems employing lasers as power sources, it is imperative that the safety requirement be fully met. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

American National Standards Institute Inc.

Go to ASTM E1461 at ASTM.org

Add your thoughts about the standard.

1375 - Demolition Materials (549) 1377 - Cartridge and Propellant Actuated Devices and Components (524) 4720 - Hose and Flexible Tubing (552) 4730 - Hose, Pipe, Tube, Lubrication, and Railing Fittings (1823) 5120 - Hand Tools, Nonedged, Nonpowered (1124) 5305 - Screws (781) 5306 - Bolts (996) 5310 - Nuts and Washers (864) 5330 - Packing and Gasket Materials (583) 5340 - Hardware, Commercial (953) 5905 - Resistor (753) 5910 - Capacitors (783) 5930 - Switches (1012) 5935 - Connectors, Electrical (4357) 5940 - Lugs, Terminals, and Terminal Strips (564) 5945 - Relays and Solenoids (733) 5950 - Coils and Transformers (856) 5960 - Electron Tubes and Associated Hardware (1630) 5961 - Semiconductor Devices and Associated Hardware (707) 6145 - Wire and Cable, Electrical (1629) 6240 - Electric Lamps (662) 6505 - Drugs and Biologicals (1343) 6515 - Medical and Surgical Instruments, Equipment, and Supplies (1907) 6520 - Dental Instruments, Equipment, and Supplies (790) 6530 - Hospital Furniture, Equipment, Utensils, and Supplies (745) 6610 - Flight Instruments (540) 6625 - Electrical and Electronic Properties Measuring and Testing Instruments (1241) 6640 - Laboratory Equipment and Supplies (1187) 6810 - Chemicals (1114) 8010 - Paints, Dopes, Varnishes, and Related Products (2046) 8030 - Preservative and Sealing Compounds (554) 8140 - Ammunition and Nuclear Ordnance Boxes, Packages and Special Containers (797) 8305 - Textile Fabrics (910) 8415 - Clothing, Special Purpose (660) 8455 - Badges and Insignia (3093) 8915 - Fruits and Vegetables (531) 9330 - Plastics Fabricated Materials (759) FACR (1647) ISDA (1776) ISDD (786) ISDF (1827) ISDN (581) MISC (1045) PACK (539) SESS (581)
Aerospace Material (225) Aircraft Air Conditioning, Heating, and Pressurizing Equipment (334) Aircraft Hydraulic, Vacuum, and De-icing System Components (263) Ammunition, 75mm through 125mm (192) Ammunition, over 30mm up to 75mm (208) Ammunition, through 30mm (349) Analytical Chemistry (180) Bombs (192) Building (414) Bulk Explosives (261) Cartridge and Propellant Actuated Devices and Components (524) Consumer Product Evaluation (267) Copper (192) Demolition Materials (549) Electrical and Magnetic Conductor (162) Electronics (153) Environmental Toxicology (187) Fire Control Computing Sights and Devices (338) Fire Control Radar Equipment, except Airborne (197) Fuzes and Primers (454) Geotechnical Engineering (217) GUN (640) Land Mines (276) Medical Device and Implant (427) Military Chemical Agents (156) Miscellaneous Aircraft Accessories and Components (231) Miscellaneous Fire Control Equipment (216) Nondestructive Testing (246) Nonferrous Metal and Nonferrous Alloy (367) Nuclear Technology (274) Optical Sighting and Ranging Equipment (451) Paint and Related Coating (456) Parachutes; Aerial Pick Up, Delivery, Recovery Systems; and Cargo Tie Down Equipment (324) Petroleum (378) Plastic Pipe (248) Pyrotechnics (175) Road and Paving (177) Rockets, Rocket Ammunition and Rocket Components (368) Rubber (166) Security System Pedestrian and Walkway Safety (157) Specialized Test and Handling Equipment, Nuclear Ordnance (150) Sports and Recreation (316) Steel (908) Torpedos and Components, Inert (258) (621)