ASTM D3518 is the test method for the in-plane shear response of composites using a +/-45 laminate tension test. To match this to your program, talk with our team.
What ASTM D3518 Covers
It obtains the in-plane shear stress-strain response of a composite by pulling a +/-45 laminate in tension, a simple route to shear modulus and strength.
How the Test Is Run
A +/-45 tabbed coupon is pulled in tension with axial and transverse strain measured, and the shear response is derived from the strains and the applied load.
Why It Matters
In-plane shear properties are needed for composite design; strain measurement in two directions is essential to derive the shear response.
Reading the Designation
Cited as ASTM D3518 with its edition. Confirm the version and specimen or fixture requirements before finalizing setup. To configure a composite testing setup, request a quote.
Related Standards
ASTM D5379 and ASTM D7078 use notched shear fixtures and ISO 14129 is the ISO shear method.
Request a Quote
Setting up composite in-plane shear testing to ASTM D3518? Request a quote and our team will help you build a system matched to your laminate layup and strain measurement.
TensileMill CNC products for ASTM D3518
Our specimen-preparation systems and testing equipment compatible with ASTM D3518:
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Composite Testing Grips and Fixtures for Tensile, Shear, and Delamination Evaluation
Grips and fixtures for tensile, shear and delamination of composites
Bring ASTM D3518 testing in-house with TensileMill CNC
TensileMill CNC designs and builds the systems labs use for standards-based mechanical testing. That typically means universal testing machines with composite grips and fixtures for tension, compression, and shear coupons. Send us your specimen types and target standards, and we will help you spec the right system.