Technology

Technology

DPM (Direct Part Marking)

Direct part marking (DPM) is a process to permanently mark parts with product information including serial numbers, part numbers, date codes, and barcodes. This is done to allow the tracking of parts through the full life cycle. The interpretation of 'permanent' often depends on the context the part is used. In the aerospace industry an aircraft part may be in service for over 30 years. Within telecom and computer industries the life cycle may only last a few years. DPM is often used by automotive, aerospace, and electronic manufacturers to facilitate a reliable identification of their parts. This can assist in data logging for safety, warranty issues and satisfy regulatory requirements. Also the United States Department of Defense demands a physical mark on tangible assets in conjunction with the Item Unique Identification.

Barcode Types
There are many ways to encode an information to a machine-readable code. The preferred codes are the Data Matrix and the QR Code. Data Matrix is used by Motorola. It is also preferred by NASA to mark parts. In the automotive industries also the QR Codeis used. This is founded in the fact that this code was initially developed by Denso Wave (a global automotive components manufacturer) for tracking parts in vehicle manufacturing.   

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