Inspection & Testing · Component review guide · Litian Yunde
Identify what the test represents. Original explanatory schematic; not to scale and not a product test result.
复合材料试验试样为所记录的试样和试验条件提供了依据。它并不意味着由名称相似的碳纤维制成的每个成品部件都自动符合要求。应将试验报告与材料、铺层、工艺、几何形状以及正在评估的要求联系起来。.
Identify the specimen before reading the number
Check the material system, specimen orientation, preparation and conditioning reported. Confirm the test method and the measured property. A result for fibre, laminate or a bonded coupon describes a different object from a complete component. If the report does not identify the specimen sufficiently, request clarification before using it as an acceptance basis.
Compare the variables that matter
A production part may include holes, curves, joints, inserts, thickness transitions and a different loading arrangement. List the differences between the specimen and the part, then ask the responsible engineer what additional evidence is needed. Do not apply a coupon value directly as a permitted load on a finished component without the necessary analysis and validation.
Use witness samples for a defined purpose
A witness coupon can accompany a production process, but its role should be agreed beforehand. Identify whether it supports material verification, process monitoring or a particular bond review. Keep its batch relationship and processing record. A witness label alone does not establish that the coupon experienced every relevant condition of a complex finished part.
Example: a machined bracket offered with a laminate report
The supplier provides a laminate test report with a bracket quotation. The buyer checks the report’s material and orientation, then asks how the bracket’s holes, geometry and service loading are addressed. The laminate result stays in the evidence package as background; the bracket’s acceptance requirements remain tied to its own drawing and validation plan.
此为示例场景，并非客户案例或已报告的生产结果。.
下单前需确认的细节
| 评论对象 | 记录以示同意 |
|---|---|
| Specimen identity | Material, layup/orientation and specimen geometry. |
| Test conditions | Method, conditioning and reported property. |
| Part comparison | Geometry, process, joints and loading differences. |
| Evidence role | What the report supports and what remains unverified. |
买家常问的问题
Can a material certificate replace a finished-part test?
Only where the agreed acceptance plan permits that evidence for the stated requirement.
Is a supplier’s high strength number enough?
No. Its specimen, direction, test conditions and relevance to the part must be clear.
技术背景及相关阅读资料
背景资料： Hexcel：预浸料技术. 上述项目检查清单和示例仅供编辑参考；本参考资料并不对利天云德的组件进行认证。.