There are several VDI guidelines about bionic related topics on the VDI-webpage.

The Papers are:

VDI 6220 Blatt 1
Biomimetics – Conception and strategy – Differences between biomimetic and conventional methods/products

VDI 6221 Blatt 1
Biomimetics – Biomimetic surfaces

VDI 6222 Blatt 1
Biomimetics – Biomimetic robots

VDI 6223 Blatt 1
Biomimetics – Biomimetic materials, structures and components

VDI 6224 Blatt 1
Biomimetic optimization – Application of evolutionary algorithms

VDI 6224 Blatt 2
Biomimetic optimization – Application of biological growth laws for the structure-mechanical optimization of technical components

VDI 6224 Blatt 3
Biomimetics – Integrated product development process for biomimetic optimization

VDI 6225 Blatt 1
Biomimetics – Biomimetic information processing

VDI 6226 Blatt 1
Biomimetics – Architecture, civil engineering, industrial design, basic principles

Sources:

https://www.vdi.de