SMART Events

The following X-ray images illustrate what can be seen using X-ray systems, these example images were produced by X-Tek.

The SMART Group X-ray day was opened by Bob Willis welcoming delegates and introducing staff at X-Tek who would be involved in the day. The first presentation was given by Bob covering the modern assembly process and where X-ray could be used in the process. It is obvious that the technique can be used after reflow, however, it is also a useful tool after rework, wave soldering, goods in and during failure analysis. Bob also showed some examples where defects could be detected at each of the key process stages in manufacture and how the defects occurred.

Presentations were also give by Stuart Wright and Steve Hursey during the day with Steve also covering the hands-on session during the afternoon session.

Stuart Wright was the second speaker of the day and went into the fundamental process of X-ray and how it works and the principles of X-ray. It is interesting how thin layers of different materials can be used to filter out parts of the spectrum, this allows systems to be adapted to fit specific process requirements.

Its fair to say that many systems on the market have software to enhance the images but it was explained that the initial image has to have the required resolution to enhance. Stuart explained how their research activities are continuing to improve and enhance the resolution that can be achieved.

The third presentation before lunch outlined the different systems and how they work. Steve Hursey explained the use of 2/3D inspection and how movement of the head or object can improve the capability of the X-ray technique.

During the afternoon session Steve Hursey went through the X-ray system operation and what are the options which can be used for different applications. Its fair to say that most of the delegates see BGA and CSP being the major application for this type of equipment but there are lots of applications which can benefit from X-ray investigations.

A very useful and informative day and many thanks to all the X-Tek Systems staff for organising the event and the superb lunch which all the delegates enjoyed. This is the second X-ray day in Tring and we hope to organise others inspection days in the future. Let us know what events you would like to see the SMART Group running in 2002. To find out more about X-tek visit their web site www.xtek.co.uk