ASTM E561 – K-R Curve Determination Testing
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MECHANICAL TESTING LABORATORY
Due to the very large number of tests offered, descriptions of those most commonly requested have been gathered into the following groups:
- Air Permeability Testing
- Axial-Torsion Testing
- Blast Testing – Armor, Blast Mitigation Materials, Custom Structures
- Carbon Fiber-Reinforced Epoxy Testing
- Component Testing
- Compression Testing
- ASTM C365 – Flatwise Compressive Properties of Sandwich Cores
- ASTM C1358 – Compression Testing of Fiber Reinforced Advanced Ceramics
- ASTM D695 – Compression Testing of Rigid Plastics
- ASTM D1621 – Compression Testing of Rigid Cellular Plastics
- ASTM D3410 – Compression Testing of Polymer Matrix Composite Materials using Unsupported Gage Section by Shear Loading
- ASTM D6641 – Compression Testing of Polymer Matrix Composite Materials using Combined Loading Compression (CLC)
- ASTM E9 – Compression Testing of Metals
- ISO 604 – Plastics – Determination of Compressive Properties
- ISO 844 – Rigid Cellular Plastics – Determination of Compression Properties
- Conditioning
- Creep/Stress Rupture Testing
- Density Testing
- Fatigue Testing
- ASTM C1360 – Constant Amplitude, Axial, Tension-Tension Cyclic Fatigue Testing of Continuous Fiber-Reinforced Advanced Ceramics
- Tests can be performed at temperatures up to 2500 °F
- ASTM C1361 – Constant Amplitude, Axial, Tension-Tension Cyclic Fatigue Testing of Advanced Ceramics
- Tests can be performed at temperatures up to 2500 °F
- ASTM D3479 – Tension – Tension Fatigue Testing of Polymer Matrix Composite Materials
- ASTM D7791 – Uniaxial Fatigue Properties of Plastics
- ASTM E466 – Force Controller Constant Amplitude Axial Fatigue Testing of Metallic Materials
- Tests can be performed at temperatures up to 2200 °F
- ASTM E606 – Strain-Controlled Fatigue Testing
- Tests can be performed at temperatures up to 2200 °F
- ASTM E647 – Measurement of Fatigue Crack Growth Rates (da/dN)
- ASTM C1360 – Constant Amplitude, Axial, Tension-Tension Cyclic Fatigue Testing of Continuous Fiber-Reinforced Advanced Ceramics
- Fiber Push-Out SEM Testing
- Flexural Strength Testing
- ASTM C158 – Strength of Glass by Flexure
- ASTM C393 – Core Shear Properties Testing of Sandwich Constructions by Beam Flexure
- ASTM C651 – Flexural Strength of Carbon and Graphite by Four-Point Loading
- ASTM C1161 – Flexural Strength Testing of Advanced Ceramics
- ASTM C1341 – Flexural Properties of Continuous Fiber-Reinforced Advanced Ceramic Composites
- ASTM D790 – Flexural Properties Testing of Unreinforced and Reinforced Plastics
- ASTM D4476 – Flexural Properties Testing of Fiber Reinforced Pultruded Plastic Rods
- ASTM D6272 – Flexural Properties Testing of Unreinforced and Reinforced Plastics by Four-Point Bending
- ASTM D7264 – Flexural Properties Testing of Polymer Matrix Composite Materials
- ISO 178 – Plastics – Determination of Flexural Properties
- ISO 14125 (Method B) – Fibre-Reinforced Plastic Composites – Determination of Flexural Properties
- Formability Testing
- Fracture Toughness Testing
- ASTM B646 – Fracture Toughness Testing of Aluminum Alloys
- ASTM E399 – (K-Value) Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials
- ASTM E561 – K-R Curve Determination Testing
- ASTM E740 – Fracture Testing with Surface-Crack Tension Specimens
- ASTM E1820 -Measurement of Fracture Toughness
- Impact / Drop Weight Testing
- Metal Matrix Composites
- Peel Testing
- Poisson’s Ratio Testing
- ASTM E132 – Testing Poisson’s Ratio at Room Temperature
- -150 °F to +300 °F
- ASTM E132 – Testing Poisson’s Ratio at Room Temperature
- Puncture Testing
- Shear Testing
- ASTM B769 – Shear Testing of Aluminum Alloys
- ASTM C273 – Shear Properties Testing of Sandwich Core Materials
- ASTM C1292 – Shear Strength Testing of Continuous Fiber-Reinforced Advanced Ceramics
- ASTM D732 – Shear Strength Testing of Plastics
- ASTM D2344 – Short-Beam Strength Testing of Polymer Matrix Composite Materials (Interlaminar Shear)
- ASTM D3528 – Strength Properties Testing of Double Lap Shear Adhesive Joints by Tension Loading
- ASTM D3846 – In-Plane Shear Strength Testing of Reinforced Plastics
- ASTM D3914 – In-Plane Shear Strength Testing of Pultruded Glass-Reinforced Plastic Rods
- ASTM D5379 – Shear Properties Testing of Composite Materials by the V-Notched Beam Method (Iosipescu Shear)
- ASTM D7078 – Shear Properties Testing of Composite Materials by V-Notched Rail Shear
- ISO 1922 – Determination of Shear Strength of Rigid Cellular Plastics
- ISO 4587 – Tensile Lap-Shear Strength of Rigid-to-Rigid Bonded Assemblies
- Stress-Corrosion Testing
- ASTM G38 – Standard Practice for Making and Using C-Ring Stress-Corrosion Test Specimens
- ASTM G49 – Standard Preparation and Use of Direct Tension Stress-Corrosion Test Specimens
- ASTM G64 – Classification of Resistance to Stress-Corrosion Cracking of Heat-Treatable Aluminum Alloys
- ASTM G139 – Determination of Stress-Corrosion Cracking Resistance of Heat-Treatable Aluminum Alloy Products Using Breaking Load Method
- Tensile Testing
- ASTM C297 – Flatwise Tensile Strength of Sandwich Constructions
- ASTM C565 – Tension Testing of Carbon and Graphite Mechanical Materials
- ASTM C1147 – Short Term Tensile Weld Strength of Chemical-Resistant Thermoplastics
- ASTM C1275 – Tensile Testing of Continuous Fiber-Reinforced Advanced Ceramics (CFCC’s)
- ASTM C1359 – Monotonic Tensile Strength Testing of Fiber-Reinforced Advanced Ceramics
- ASTM C1468 – Transthickness Tensile Strength of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperature
- ASTM D638 – Tensile Testing of Plastics
- ASTM D882 – Tensile Testing of Thin Plastic Sheeting
- ASTM D885 – Tensile Properties of Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns
- ASTM D3039 – Tensile Testing of Polymer Matrix Composites
- ASTM D3822 – – Tensile Properties of Single Textile Fibers
- ASTM D3916 – Tensile Testing of Glass-Fiber-Reinforced Plastic Rods
- ASTM D4533 – Trapezoid Tearing Strength of Geotextiles
- ASTM D4632 – Grab Breaking Load and Elongation of Geotextiles
- ASTM D5179 – Tensile Testing of Organic Coatings to Plastic Substrates
- ASTM E8 – Tensile Testing of Metals
- ASTM E21 – Tensile Testing of Metals at Elevated Temperatures (up to 2500 °F)
- ASTM E238 – Pin Bearing Test of Metallics
- ASTM E338 – Sharp Notch Tension Testing of High Strength Sheet Materials
- ASTM E345 – Tension Testing of Metallic Foil
- ASTM E517 – Plastic Strain Ratio “r” for Sheet Metal
- ASTM E646 – Tensile Strain-Hardening Exponents (n-Values) of Metallic Sheet Metals
- ISO 527-1 – Tensile Properties of Plastics
- ISO 527-3 – Tensile Properties of Plastic Films and Sheets
- ISO 6892-1 – Tensile Testing Metallic Materials at Room Temperature
- ISO 6892-2 – Tensile Testing Metallic Materials at Elevated Temperature
- True Stress / True Strain
- Thermal Expansion Testing
ASTM E561 – K-R Curve Determination Testing
ASTM E 561 covers the determination of resistance to fracturing of metallic materials by R-curves using either the center-cracked tension panel M(T), the compact specimen C(T), or the crack-line wedge-loaded specimen C(W), to deliver applied stress intensity factor, K, to the material. An R-curve is a continuous record of toughness development in terms of KR plotted against crack extension in the material as a crack is driven with a continuously increased stress intensity factor, K.
R-curves characterize the resistance to fracture of materials during incremental slow-stable crack extension and result from growth of the plastic zone as the crack extends from a sharp notch. They provide a record of the toughness development as a crack is driven stably under increasing applied K. They are dependent upon specimen thickness, temperature, and strain rate.
Please email info@trl.com or call (304) 547-5800 for information regarding test procedures, results, specimen information, pricing or any other ASTM E561 questions you may have.