KASON-DIT302E composite plate drop weight impact tester for aerospace & automotive composite pre-damage test, complies with ASTM D7136 & GB/T21239. Equipped with Siemens PLC and high-speed data acquisition system to auto generate force-displacement curves. Anti-secondary impact device & fully enclosed safety cover, fully automatic test process
Brief Introduction
This test method covers the determination of the damage resistance of continuous fiber-reinforced polymer matrix composite laminates subjected to low-velocity impact using an instrumented drop-weight impact tester. Damage resistance is characterized by the extent of internal damage and surface indentation resulting from a controlled impact event.
This test method is commonly used to introduce controlled impact damage to specimens that are subsequently tested in accordance with ASTM D7137/D7137M for Compression After Impact (CAI) strength measurement. It is not applicable to short-fiber reinforced molding compounds.
Key Specimens & Fixture
Nominal specimen dimensions: 100 mm × 150 mm
Support window opening: 75 mm × 125 mm
Soft clamping with rubber pads on four sides
Impactor Parameters
Hemispherical tup diameter: 16 mm
Total drop mass: 5.5 ± 0.25 kg
Tup hardness: 60–62 HRC
Impact Energy Guidance
Standard target energy: 6.7 J per millimeter of specimen thickness
Mandatory Equipment Requirements
Instrumented drop-weight impact machine
Anti-rebound mechanism to prevent repeated impacts
Data acquisition for force-time history, impact velocity and energy
Post-impact inspection: indentation depth measurement, ultrasonic C-scan for internal delamination area
Related Standards
ASTM D7137/D7137M: Standard Test Method for Compressive Residual Strength Properties of Damaged Polymer Matrix Composite Plates
ASTM D7766/D7766M: Standard Test Method for Damage Resistance of Sandwich Constructions Subjected to Drop-Weight Impact
ASTM D6264/D6264M: Standard Test Method for Measuring Damage Resistance of Fiber-Reinforced Polymer Matrix Composites by Quasi-Static Indentation