Composite Sandwich Panel Test Methods

Sandwich panel composites are made of two thin, stiff face sheets bonded to a relatively thick, 轻量级的核心. To understand the durability and performance of a sandwich panel, the entire construct must be tested together.  

Composite sandwich materials have stiff skin around the core which provides superior 弯曲 properties with lower weight. The constructs are commonly used in aircraft, 卫星, 船舶和汽车应用, 还有风力涡轮机. 

ASTM Composite sandwich panel test methods

im体育APP提供了多种 机械测试 methods to evaluate the properties of composite sandwich structures, 包括平面拉伸, 芯板剪切, 弯曲, 和压缩.

Out of plane/Flatwise tensile ASTM C297

我们的 experts perform out-of-plane or flatwise tensile according to ASTM C297. The test set up requires bonding the skins to loading blocks and pulling them apart perpendicular to the sandwich panel. The failure mode typically takes place in the core and sometimes in the adhesive. 

Core shear/Plate shear testing ASTM C273

Core shear or plate shear testing is a useful method for understanding the shear properties of the sandwich construct. 根据ASTM C273进行测试时, the sample skins are bonded to the plates and loaded in opposite directions in the plane of the sandwich panel, 创建剪切条件. The failure mode typically takes place in the core. In-plane shear may also be performed using a “picture frame” configuration. 元件提供面板 复合材料剪切试验 for specimens of various sizes and to high loads. 

Bend testing sandwich materials ASTM C393

ASTM C393 outlines the process for bend testing sandwich materials. Different properties may be measured by changing the span of loading. 例如, a shorter span of loading provides data for core shear properties and a longer span of loading provides data for skin properties.

Compression testing ASTM C364 and ASTM C365

im体育APP performs compression testing both 平面 and out-of-plane. ASTM C364 provides guidance for 平面 or edgewise compression testing, and ASTM C365 covers out-of-plane or flatwise compression testing. Both compression methods help determine modulus data. 

To simulate in-service damage, composite sandwich panels undergo 疲劳测试 in either bend or compression to evaluate damage growth. 在这些情况下, the materials may have impact damage, or flaw deliberately included during construction. 

粘合剂粘合试验ASTM D1781

The adhesive bond used to connect the sandwich panel materials is evaluated in peel. 爬鼓剥皮, 在ASTM D1781中概述, is a common quality control test for sandwich panel construction. im体育APP is involved in the development of current methods for more analytical cantilever peel methods.

im体育APP复合测试 

我们的 综合测试 experts have a breadth of experience testing composite sandwich panels to a variety of test methods and specifications. We work diligently to ensure your materials and constructs are quality, 兼容的, 和定制.

For more information about testing sandwich panel constructs or to request a quote, 立即im体育APP.