In-Line Inspection of Additive Manufactured Parts Using Laser Ultrasonics, Phase I

Metadata Updated: May 2, 2019

Additive manufacturing (AM) is an increasingly popular technique for rapid, low-cost production of parts directly from a CAD file. AM is especially appealing for complex parts that would be costly or impossible to fabricate by machining or casting. It is also attractive for fabrication of prototype parts.

At present there are no reliable, cost-effective process control techniques to minimize defect production and for qualification of finished parts. Studies at NASA, NIST, and other agencies have noted this gap and urged increased efforts to develop techniques for part qualification. In this project we will demonstrate the feasibility of applying laser ultrasonic testing to inspect each deposited layer in real time as it is formed. This in-line inspection qualifies the part layer-by-layer, ensuring finished parts that require no further testing. In Phase I we will first develop a database of the types and sizes of important defects in NASA-specific components. We will then optimize the beam configuration for sensitivity to these defects, and also develop signal processing algorithms to enhance defect detection and collect size information. In Phase II a prototype in-line inspection system will be developed and tested.

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

Downloads & Resources


Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93557
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 357a4413-1007-4d41-bf30-fb659764b7ee
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-12-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash e4957aa1a84bbdc1468627f5d26a362e75d675f0
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.