As per UID compliance, product identification marking is mandatory in the aerospace, automotive, and defence industries to determine and hint merchandise in the manufacturing course of. The US Department of Defence has set sure requirements to make sure that these marks are strictly complied with and mandated as per the UID compliance. One such normal is MIL-STD-130. In keeping with the MIL-STD-130 commonplace, contractors supplying navy merchandise are required to have an acquisition value better than $5000 or any mission important or serialized product component are mandated to mark their merchandise with a specifically formatted machine readable 2-D Information Matrix bar code.
The 2-D Knowledge Matrix code ensures that products having this UID compliance code are validated, readable and formatted appropriately. A Two-dimensional Data Matrix code often contains a manufacturer serial number, identification number, and the serialized half number of the product. These codes are placed on the manufacturing products in a number of ways comparable to dot peening, ink jet, laser etching and even by way of chemical etching. The 2-D Knowledge Matrix prevents codes being misinterpret and supplies higher density of information storage. As this is an open architecture code, the encoding algorithms are freely available for all manufactures.
Nevertheless sure loopholes were observed within the MIL-STD-130 customary. For instance, it was scrutinized that a flat laser-marked metallic half can be learn simply by using on-axis illumination, but it surely might be a problem to confirm other marks utilizing the equivalent illumination. The issue was solved within the newest version of the standard, MIL-STD-130N. This new commonplace, approved to be used by all Department and agencies of the Division of Defence (DoD) was released on December 17th, 2007. In line with this new MIL-STD-130N standard, numerous different lighting strategies are mandated for use for high quality checking of direct half marks. Defence contractors are additionally required to follow particular mark quality measures when delivering components to the federal government.
A number of lighting situations and mark-high quality measures are to be verified within the new MIL-STD-130N commonplace .Ten sorts of lighting using pink 650 ?20-nm LEDs are specified as per the newest MIL-STD-130N customary. In addition to this, the 2-D Knowledge Matrix code should be verified based on the cell distinction, cell modulation, reference decode, print progress, unused error correction, minimal reflectance, axial non-uniformity, grid non-uniformity, fastened sample injury, and cell measurement.
As per the UID compliance, here's a transient abstract of among the changes in the MIL-STD-130N commonplace.
In keeping with modifications in part 3, an merchandise marked with the identification information of one other merchandise could be affixed to the opposite item. Nonetheless, the label or nameplate which is affixed to a particular merchandise can be of similar or totally different material than that of the item.
The modifications in section 4 emphasizes that the UID compliance marking technique ought to be permanent. As per the brand new MIL-STD-130N commonplace, the marking method should ensure to resist the environmental changes and any particular rebuild processes. However, all existing marked products aren't subjected to retest just because this MRI requirement clause is added now within the new standard. The retest can solely require when insuring with the UID compliance with part 4.5.