ASME Y14.37:2012 pdf free download – Composite Part Drawings
5 PARTS LIST REQUIREMENTS
Prepare parts list in accordance with ASME Y14.34.Material for each ply of the part may be specified in theNOTES column by reference to the ply table such as SEE PLY TABLE.
6COMPOSITE PART DEFINITION REQUIREMENTSComposite part definition shall contain all datarequired to define a part as follows:
(a)Provide a tool side view.
(b) Complete surface definition(s).
(c)Show the part in the finished condition includingvariations due to ply drop-off , core shape, etc.SeeFig.3-1.
(d)Ply orientation symbol(s). See para.7.3.
(e)Dimensioning and tolerancing in accordance withASME Y14.5 and ASME Y14.41.
(f)Complete ply definition including internal cutoutsand perimeters of each ply. See Fig.3-1.
(g) Supplementary views and ply stackup views asrequired.
(h)Annotations.()Ply table.
(j)Identify tool side(s) on each part.
(k) Where used, identify the honeycomb core ribbondirection on the tool side view.See Fig. 3-1.(lManufacturing process specification.
NOTE: Composite parts are highly dependent on the manufac-turing process utilized. Process parameters such as cure and postcure cycles, splices and darts,orientation deviation,temperatureramp rate, thermal soak cycles,vacuum, pressure, material condi-tioning, and manufacturing environment can all have significantimpact on the end product performance. Because verification ofend products can yield incomplete information as to proper fabrica-tion, a process specification should be used to define and controlthe manufacturing variables.
7.3 Ply Orientation Symbol
The ply orientation symbol is used to indicate theply orientation. See para.3.23.The requirements for plyorientation symbols are as follows:
(a) Place the symbol in the tool side view.
(b) Show the zero axis and orientation of the symbol,either positive, negative, or both. See Fig.7-1.
(c)Show the allowable orientation tolerance devia-tion of the plies from the ply orientation symbol directlyor by reference.No tolerance is applied to the ply orien-tation symbol vectors.
(d) When more than one ply orientation symbol isrequired, identify each to differentiate the ply orienta-tion symbols. See Fig.7-2.
7.4 Ply Level
Each ply level encompasses all the plies and itemslaid in the same layer of the laminate prior to beingcovered either fully or partially by another ply or item.The entire list of ply levels per part shall be in ascendingorder in the ply table. Ply level is frequently identifiedby terms such as layup step level or ply layer.
PLY STACKUP VIEwS
The requirements for ply stackup views are as follows:
(a)The view has no scale and shall be so noted.
(b) Each ply and item shown shall be identified indi-vidually or ina callout listed in the order they are stackedin the laminate.
(c)Solid lines shall be used to depict each ply.
(d) The tool side(s) of the ply stackup shall be labeled.(e)Other items shall be depicted within the plystackup view through representation of the geometricshape.See Fig. 3-1.