An Examination of the Underlying Physics and Mechanics of Herringbone and Diagonal/Cross-Buckle Flatness Distortions -- Part 1: Basic Principles and Organization of Analysis.

Herringbone and diagonal wrinkles/cross-buckles are related members of a family of non-trivial, visually stunning and terribly confounding flatness defects. This family encompasses a spectrum of cascading complexity, ranging from relatively simple, full-width diagonal wrinkles to several varieties of multi-facetted, high-fidelity cross-hatch patterns. Gaining an understanding of how all this works, how these defects form and what can be done about them is an involved discussion. This article starts things off by introducing the key concepts and then examining a case study concerning the most basic family member: diagonal wrinkles/buckles. [ABSTRACT FROM AUTHOR]