Using traditional acrylic materials for aircraft inspections can have a tendency to cause issues that ultimately end up costing you time and accuracy. Some examples of this might be maintaining...

Submicrometer particles filled with liquid perfluorocarbon have been shown to increase the ultrasound reflectivity of surfaces onto which they bind and, consequently, are seen as potential targeted...

A prototype calibration standard has been developed to allow 3D imaging quality evaluation and sensitivity assessment for multiple examination modes. Well defined targets with characteristics only...

Splitting a beam so as to separate it into a transmitted and reflected component is normally associated with laser optics. An interesting feature was observed when designing a water-column delay line...

An important aspect of coupling ultrasound into a component is the ability to maximise transmission by matching acoustic impedance. Another consideration in ultrasonic testing is the relative...

Applications exist where ultrasonic probes are required to be in place for long periods of time, sometimes in relatively extreme conditions. Typically, ultrasonic corrosion monitoring and ultrasonic...

Ultrasonic thickness testing is probably one of the simplest and most common applications of ultrasonic technology. However, it can be frustrating trying to get a steady signal when the surface is...

High Density Polyethylene (HDPE) pipe is used in applications such as slurry transfer lines, water mains, natural gas mains, sewer mains, and fire system supply lines. In addition, HDPE pipe is used...

Acoustic impedance is a simple parameter to calculate and it is often used to get an impression for how well sound will move from one medium to another. Acoustic impedance matching is a term used to...

Phased array refracting wedges are generally made with a natural incidence angle that permits an effective range of refracted angles. Manufacturers suggest that it is useful between about plus or...

Time of Flight Diffraction (TOFD) relies on a beam with relatively high divergence to provide suitable volume coverage. Refracting wedges provide a means of directing the beam towards the inspected...

One of the biggest stumbling blocks to obtaining clear scan data when inspecting irregular or variable surface geometry is the ability of your probe to conform with the surface. Conformability can be...

Over the years, these elastomeric materials have been developed with a range of low acoustic velocities and relatively low attenuation. These materials are used as acoustic lenses in medical...

When using ultrasonic probes with removable wedges, the acoustic coupling between wedge and probe is usually effected by means of a gel or grease. This tends to evaporate over time and requires...