Fabric Belt Scanning
The primary purpose of the Fabric Belt Scanning system is to use non-destructive condition monitoring to determine the belt’s “palm print” (what remains unchanged / initial scan) and other events that have changed the condition of the conveyor belts carcass and provide recommendations as to what repair action needs to take place.
Fabric Belt Scanning performed regularly as part of plant-wide condition monitoring, is used as the belt ages to check the evolution of events, such as ingress of moisture, folded fabric and reducing belt thickness.
This permits the operator to plan appropriate maintenance down-time.
Additionally, correlation of time / thickness information with belt ageing, aids in the prediction of likely useful belt life. Knowledge gained through regular condition monitoring also provides valuable assistance in establishing the design parameters for any replacement belting.
The recorded data allows the CBM technician to advise a client on the significance of the findings and to make positive suggestions as to remedial action. This commonly results in significantly extending the safe working life of the fabric / solid woven conveyor belting.
The system relies on comparison of belt signatures over a period of time, it is important to have base signature data recorded as soon as possible after belt manufacture or installation. Even if the belt has been in action for a while, an initial signature will capture a baseline scan for CBM technicians to compare / interpret against subsequent data.
As with our other services, CBM provide and in depth report based which opens with a summary of findings and a list of recommendations in order of priority, to assist effective maintenance planning.
Following are some sample pages - below left is our findings from the inspection of an event, Event 6. The event's location and type of damage are described and there is both a sketch and a photograph for further reference.
Below is the belt signature for the corresponding event. During scanning the belt is divided into three segments across its width: left, centre and right. The left and right sides of the belt are identified by facing with the direction of product travel.
Splices are also monitored. Below are some examples of evaluation of a splice and a clip join. A single splice signature will not indicate what the state of adhesion is, within the splice. Only changes in signature, with time, will give advance warning of impending splice failure. For this reason, regular visual inspection is still the best method for avoiding catastrophic splice failure. This applies equally well for mechanical fasteners.