Section 1
Class guideline — DNVGL-CG-0197. Edition November 2017 Page 5
Additive manufacturing - qualification and certification process for materials and components
DNV GL AS
SECTION 1 GENERAL
1 Introduction
1.1 Objective
The purpose of this guideline is to support the introduction and use of additive manufacturing (AM)
technologies as an alternative method to produce materials, parts or components that are subject to approval
or verification in accordance with DNV GL rules and/or other applicable standards used by the Society.
Guidance note:
AM is a term used to cover a broad range of manufacturing processes (also known as 3D printing) that involve sequential-layer
material addition throughout a 3D work envelope under automated control.
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1.2 Scope
This class guideline provides a framework for approval and certification of materials, products and
components made by additive manufacturing (AM) through a systematic qualification approach.
Interfaces between AM technologies and conventional technologies already covered by existing rules and
standards may be covered by this class guideline based on a case-by-case agreement with the Society.
1.3 Application
This document is applicable to stakeholders in the maritime industry, e.g. manufacturers and sub-suppliers of
materials, parts and components, service suppliers and end users adopting AM technologies. The guidelines
may be applied for:
— approval of pre-materials, materials, parts and components made by the use of additive manufacturing
process
— approval of AM related services
— specification of part-building requirements for end users.
It is applicable for materials, parts and components made by any AM processing route that may be defined
as one of the emerging AM technologies or concepts, but not covered by existing conventional manufacturing
or fabrication routes. Requirements for the qualification of manufacturers shall be considered in each case.
This consideration shall take into account the complexity and criticality of the product to be supplied,
manufacturer’s previous experience, and these guidelines.
1.4 Structure
This document is structured into three sections:
Section 1:
— introductory section where the objective, scope and other general details are presented.
Section 2:
— contains a brief introduction to AM technologies and discusses general principles of additive manufacturing
processes, important process parameters and variables. This section is mainly for reference purposes.
Section 3:
— provides guidance to the qualification process for additively manufactured materials and components, AM
qualification and certification work process and various services offered by DNV GL.
See App.C.
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