The Value Of Component Inspection

Component and detailed parts need to go through a component inspection of a regular, pre-determined basis in order to prove their validity and ability to perform on an as advertised basis. The mechanical ability and dimensions will need to be checked and given a Go/No Go label based upon the specifications.

With today’s ability to perform all things digitally, many parts can be inspected with complete precision, where that capability was not possible in years past. Due to experience, technology, and techniques, tools used can provide integrated and dedicated inspections complete and thorough digital techniques that work so fast and efficiently, that human manual inspections will never be thought of again.


Source: GE-Electric


A component inspection can use what is called a flying inspection method where an in-tray inspection can be performed so the part does not have to be moved.

Automated optical inspection is another method where an automated visual inspection is performed on printed circuit boards, transistors, automotive parts, lids, labels on packages, agricultural products, and others with a camera that mechanically scans pre-selected area on a product.

A method such as this can detect defects, scratches, discolorations, colours, short circuits, thinning of solder, as well as missing and incorrect components. These methods can all be non-contact methods, which will not touch or distort the findings.

There is a type of test called AOI testing which is a ‘white box’ testing which means this manner of inspection is also an non-contact type of test.  This method is able to perform almost all of the inspections that a human could do and it is used a lot in manufacturing settings, and performs more swiftly and more accurately than manual inspectors are able to do. The AOI process is implemented during many different stages of the manufacturing process to nip any problems in the bud as parts are being made.

The idea here is to detect flaws in parts as they are in the process of being made, as it costs less to fix things during the process of manufacturing, than to have to break them down later and fix them when they are a finished product. In this way, information can quickly become feedback to previous steps in the process, so corrections can be made there. This is a much more efficient method, as it speeds up the process, and cuts down on costs measurably.

Using AOI processes for component inspection is a huge cost savings element and it serves as an excellent quality control factor right in the process of manufacturing, rather than waiting until you hear from a customer with a bad report. The AOI process almost guarantees that the product will reach the customer so that there will not be any bad reports.

AOI works well in assemblies which are high volume. The AOI is paired with boundary scan testing, in circuit testing, function tests, and x-ray testing. Since automated testing can acquire millions of data points in an instant of a second and compare the findings to a perfect part, we can receive instant results, and correction become much more efficient with faster results.


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