The plybook
The plybook tells the laminator every ply's material, angle, order and shape, generated from the design.
Predict · at 0:59 in the video
So who actually reads the plybook?
Two people. The laminator, who lays each ply from it. And the inspector, who checks the part against it, ply by ply, angle by angle.
This course is our own. These books go deeper.
- Basic Mechanics of Laminated Composite Plates, A. T. Nettles, NASA Reference Publication 1351, 1994
- Mechanics of Composite Materials, R. M. Jones, Taylor & Francis, 2nd ed., 1999
- Engineering Mechanics of Composite Materials, I. M. Daniel & O. Ishai, Oxford University Press, 2nd ed., 2006
- Design and Analysis of Composite Structures, C. Kassapoglou, Wiley, 2nd ed., 2013
- Composite Materials Handbook (CMH-17), Volume 3, Rev. G, CMH-17, SAE International, 2012
The course designs in AddPly, our browser app for laminate design: regions, ply stacks with live stacking-rule checks, thickness, mass and the ply book, plus hosted drape studies and linear FEA with maximum-stress screening, within their stated limits. The lessons teach the theory behind those on our own simulations, so you can judge the results. AddPly needs an Addcomposites sign-in.
Simulations in this lesson are our own. Ply data come from the datasheet or textbook named on screen; where a number rests on an assumption, the video says so.
