GB/T 35100-2018 in English

Introduction

Fiber Metal Laminates (FMLs) are a new type of structural material made of alternately laid metal sheets and continuous fiber composite materials. Its excellent performance has important application value in aerospace, automobile manufacturing and other fields. However, its interlaminar shear strength is one of the key indicators that determine the performance of FMLs. The GB/T 35100-2018 standard provides standardized measurement methods through the short beam method (SBS) and the double beam method (DBS), which provides an important reference for material research and development and quality control.

Test principle and equipment requirements

Test process and data analysis

Calculation formula for interlaminar shear strength: $$ \tau_{\mathrm{M}}=\frac{3}{4}\times\frac{F}{b\times h} $$ Where, $$ F $$ is the maximum load, $$ b $$ and $$ h $$ are the specimen width and thickness, respectively.

Implementation Suggestions

In practical applications, it is recommended to:

• Select loading conditions and span ratios in strict accordance with standard requirements;
• Carry out strict quality inspections on specimens to ensure that dimensional deviations meet specifications;
• Use high-precision measuring instruments and calibrate equipment regularly;
• Establish a data sharing mechanism to facilitate long-term tracking and optimization of material performance.