“Ultrasonic tested” is incomplete unless the report identifies the method, examined regions and evaluation criteria. Composite geometry and direction-dependent acoustic behaviour can affect the inspection. The useful question is what the proposed technique can assess on this particular component.
Ultrasonic Inspection of Carbon Fiber Parts: Define the Coverage Leer Más "
A porosity result needs a method and a defined sample. A surface photograph, a local section and a non-destructive scan do not describe the same evidence. Before comparing two reported values, check what material was examined and how the result was obtained.
Composite Porosity: Ask What the Measurement Actually Represents Leer Más "
A local area dominated by resin is not the same observation as an empty region inside a laminate. When discussing a surface feature, describe its location and appearance before naming a cause or deciding whether it is acceptable.
Resin-Rich Regions on a Carbon Fiber Surface: Describe the Location Leer Más "
Peel ply is a removable fabric that can leave a textured composite surface. Release film separates process layers and may have a defined perforation pattern. They have different roles, so a request for a “peelable layer” is too vague to identify the required process or delivered condition.
Peel Ply and Release Film Are Not Interchangeable Layers Leer Más "
In a process using a rigid mould on one side and a vacuum bag on the other, the two faces experience different contact conditions. Calling both faces “carbon finish” can hide that distinction. Identify which face will be visible and how the other face will be used.
Tool-Side and Bag-Side Surfaces on Carbon Fiber Parts Leer Más "
A piece of fabric that lies flat on a table does not automatically follow every double-curved surface without changing its yarn arrangement. Tight corners and changing curvature make forming a practical design question, especially where a continuous visible weave is requested.
Why Carbon Fabric Can Wrinkle Over a Double-Curved Shape Leer Más "
A finished shape has to leave its manufacturing tool. Draft is a geometric feature related to that release direction; an undercut can obstruct the path. Review the proposed tool and release movement together before assuming a smooth CAD shape is straightforward to mould.
Draft and Undercuts in a Carbon Fiber Mould Review Leer Más "
Symmetric and balanced describe different aspects of a laminate. Symmetry concerns the arrangement about the laminate mid-plane. Balance concerns matching positive and negative angle plies under the relevant material and thickness assumptions. One word does not automatically imply the other.
Balanced and Symmetric Carbon Fiber Laminates Are Different Descriptions Leer Más "
A ply angle only makes sense relative to an identified direction. In a laminate definition, 0°, 90° and ±45° describe orientations measured from that reference. They are not universal directions built into a finished component or a photograph of its weave.
What Do 0°, 90° and ±45° Mean in a Carbon Fiber Layup? Leer Más "
A fabric thickness listed before impregnation is not automatically the thickness one ply will occupy in a cured part. Cured ply thickness belongs to a defined material and processing condition. Keep that distinction when turning a ply count into a panel or wall dimension.
A fibre-content percentage is incomplete without its basis. Mass fraction compares fibre mass with total mass; volume fraction compares fibre volume with total volume. Equal percentages on those two bases do not describe the same composite.
Fibre Content by Mass or by Volume? Read the Percentage Label Leer Más "
“3K” describes a bundle of 3,000 carbon filaments. Fabric weight describes the mass of fabric over a stated area, commonly in grams per square metre. One is a yarn description; the other describes the cloth. They should not be used as substitutes on an order.
3K Carbon Fabric and Fabric Weight Describe Different Things Leer Más "
