ABSTRACT
Piezoelectric AE sensors are mounted directly on plates, or other structural members, as shown in Fig. 11-1. The probes are usually fixed to the plate with a magnetic hold-down device, as well as common duct tape. Silicone grease is typically used as the couplant when the sensor is clamped to the plate. A hot melt glue also may be used. Probes are left in place for continuous AE applications, but may be removed and replaced for intermittent inspections. Typical placement of AE sensor mounted on plate or pipe wall. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315272993/937201b5-ee77-4453-9e41-7e220cf5cb89/content/fig11_1.tif"/>
