CHARPY IMPACT TESTING SERVICES (METALS)
Charpy impact testing (also known as a Charpy V-Notch test) is a valuable method to determine the amount of energy a material absorbs during fracture. The test is performed when a pendulum head is dropped from a specified height and impacts a notched specimen of material. By comparing the difference in the height of the hammer before and after the fracture, one can measure the energy absorbed.
This provides information on the material's notch toughness and helps understand temperature-dependent ductile-brittle transition. Ductile vs. brittle fracture can be compared by looking at the shear areas of broken Charpy specimens to estimate a percentage of each.
IMR Test Labs offers Charpy impact testing to several specifications, at temperatures from -320°F to 400°F.
GARDNER IMPACT TESTING SERVICES (POLYMERS, PLASTICS, COATINGS)
Best for determining the strength of a coating, Gardner impact testing does not use a pendulum, but instead a column with a weight at the top and an impactor that sits on top of the sample.
Specimens are placed under the striker, and a weight is dropped from a known height, impacting the specimen with a known energy.
IMR has several weights and scales to accommodate a wide range of specimens. IMR's lab in New York is accredited for methods ASTM D2794 and ASTM D5420.
If you're interested in exploring IMR's impact testing capabilities, click here to request a quote, or click on the button below..
Bond Strength Testing
Charpy Impact Testing (-320°F to 450°F)
Climbing Drum Adhesion of Sandwich Composites
Coating Shear Fatigue
Coefficient of Thermal Expansion by TMA
Composite Testing (Fiber Reinforced)
Core Shear Properties of Sandwich Construction by Beam Flexure
Creep and Stress Rupture Testing
DMA (Dynamic Mechanical Analyzer)
Filled Hole Tension & Compression
Flat-wise Tensile Testing
Floating Roller Peel Strength
Hardness (Rockwell, Brinell, Durometer, Shore, Barcol, Knoop, Vickers, Macro Vickers)
Heat Deflection by TMA
Heat Treatment (furnace to 2100°F)
Lap Shear Testing
Machining & Specimen Preparation
Modulus of Rupture (MOR)
n-Value (Strain Hardening Exponent)
Open Hole Tension and Compression
Pipeline Integrity Testing
r-Value (Plastic Strain Ratio)
Residual Strength of Composites After Impact
Rotating Beam Fatigue
Shear Testing of Rivets to ASTM B565, Single/Double
Short Beam Strength
Shot Peen Qualification
Single-Edged Notched beams (SENB)
Slow Strain Rate (G129)
Surface Roughness (ANSI/ASME B46.1)
T Peel Strength
Tear Resistance of Films & Sheeting
Tear - Rubbers & Elastomers
Torsional and Axial Fatigue (200 lb)
Tube Testing (Tensile, Flare, Hydrostatic)
Welder & Procedure Qualification
Wire/Spring Testing (Wrap, Coil, Bend)
Young's, Tangent and Chord Modulus (Room Temperature)
CHARPY TESTING SPECIFICATIONS
- ASTM A370
- ASTM E23
- ISO 148-1
- JIS Z 2242