ASTM D3518/D3518M — In-plane shear response of polymer matrix composites (±45° tensile laminate)
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.
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
Set up ASTM D3518 testing with TensileMill CNC
Tell us your materials, specimen forms, and required test sections, and our team will match the right configuration.