Standard Practice for Tensile Properties of Tapered and Stepped Joints of Polymer Matrix Composite Laminates

Importancia y uso:

5.1 This test practice is designed to produce tensile property data for material specifications, research and development, quality assurance, and structural design and analysis. Factors that influence the tensile response and should therefore be reported include the following: materials (laminates and adhesive), methods of material preparation including surface preparation prior to bonding, lay-ups, specimen stacking sequence, joint taper ratio or step length, ply overlap length, material relative thicknesses and stiffness of the parent and repair laminates, adhesive bond stiffness, specimen preparation, specimen conditioning, environment of testing, specimen alignment and gripping, speed of testing, time at temperature, void content, and volume percent reinforcement. Properties in the test direction, which may be obtained from this test practice, include the following:

5.1.1 Ultimate tensile strength (based on the nominal parent material thickness), (F_p^tu).

5.1.2 Ultimate tensile strength (based on the nominal repair material thickness), (F_r^tu).

5.1.3 Ultimate running force per repair ply, (N_j).

Subcomité:

D30.05

Referida por:

D8285_D8285M-19, D4762-23

Volúmen:

15.03

Número ICS:

83.140.20 (Laminated sheets)

Palabras clave:

adhesives; bonded joint; composite materials; joint properties; joint ultimate running force; joint ultimate tensile strength; repair; stepped joint; tapered joint; tension testing;