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The RollerFORM phased array wheel probe from Olympus

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is designed for zero degree C-scan inspection

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of aerospace composites, aluminum panels and wind turbine blades

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to measure thickness and material loss

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and detect and size delamination and disbonds

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and detect and quantify internal porosity.

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Combined with the OmniScan SX, MX2, or X3 flaw detector,

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the Olympus RollerFORM scanner is an affordable, easy-to-implement

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portable alternative to immersion tank and
thru-transmission inspection systems

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for flat, convex, or narrow surfaces.

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The acoustic tire contains the phased array probe

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and creates a 25 mm delay line in water

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for smooth scanning and optimized C-scan inspection
of composite components.

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Key features include:

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Swappable 1, 3.5, and 5 MHz Olympus phased array probes.

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Two models are available:

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The original RollerFORM scanner’s 64-element probe

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provides a beam coverage of up to 51 millimeters

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and the RollerFORM XL scanner’s 128-element probe

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provides up to 128 mm of coverage.

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A low-attenuation, impedence-matched transparent tire
for the probe coupling

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allows fast, efficient C-scan acquisition with only a mist of water.

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Transparent tire material lets you see any bubbles,

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which can be cleared quickly through the bubble trap on one side.

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Waterproof integrated quadrature encoder.

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Integrated laser guide for precision line scanning.

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Integrated button on the scanner handle for raster scan indexing
or “Clicker” function.

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Integrated programmable button on the scanner handle

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for start acquisition, save data, pause\resume, or preset encoder.

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Integrated cable management and umbilical cover.

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Height adjustable middle wheel and skid plate for stabilization

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when scanning narrow or curved components.

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The Olympus RollerFORM scanner

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can be used with any OmniScan SX, MX2, and X3 phased array instrument

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while the RollerFORM XL scanner

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can be used with 128 element OmniScan MX2 and X3 flaw detectors.

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The RollerFORM encoder is connected to the instrument

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with a waterproof industrial grade LEMO connector.

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The RollerFORM phased array probe

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is connected to the instrument with the quick latch connector.

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It is autodetected by the OmniScan flaw detector,

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which will update the phased array configuration for the installed probe.

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Load the preconfigured setup file provided with the RollerFORM unit

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by selecting the correct model.

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Configure the UT and gate parameters for the C-scan inspection

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that will change with a different probe, material, or thickness.

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Alternatively, the scanning parameters can be quickly set up

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using the OmniScan X3 flaw detector’s onboard scanner library.

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The RollerFORM inspection is configured for either a single one line scan

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using only the scanner’s encoder,

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or a 2-axis raster scan

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using the encoder and button on the RollerFORM handle

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to automatically index multiple line scans.

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Define the area of the inspection in the Scan/Area menu in each axis.

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The index axis is controlled by the button on the RollerFORM handle

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and is configured for the width of the probe plus any overlap as desired.

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This parameter is also a function of the phased array setup

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and is autocalculated by the software.

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Prior to inspection the RollerFORM scanner’s acoustic tire

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must be filled with water and free of bubbles.

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Distilled, desalinized water is best and it is highly recommended

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that the water chamber be filled the day prior to inspection

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to allow the water to de-gas and saturate the tire material.

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Open the out valve and insert the water feed tube over the in valve.

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Pump water slowly with the out valve at the highest position
until the tire is filled.

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Tap or squeeze the tire gently while moving the
RollerFORM scanner side to side to clear bubbles.

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Any bubbles present after the tire is initially cleared

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can be removed by the bubble trap on the right side of the tire assembly.

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The water chamber is filled properly
when there is a gap of approximately 2 mm

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between the plastic wheel and the component surface

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while no pressure is being applied to the RollerFORM handle.

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Adjust the middle wheel and lock into place

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to conform the RollerFORM to the component surface if required.

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This enables the inspector to apply pressure without distorting the tire.

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Pre-wet the RollerFORM tire thoroughly

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and apply light water with a spray bottle over the area to be inspected.

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Make any adjustments to the phased array or
UT configuration and save the setup file.

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Position the scanner at the start of the inspection
and press the start acquisition button.

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The start acquisition button on the RollerFORM handle is programmable

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and by default will clear the C-scan and preset the encoders.

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Roll the RollerFORM to the end of the first line scan.

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Press the indexer button on the RollerFORM
to preset the encoder to the next line scan position.

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The raster scan is configured for either
a series of one-line scans in the same direction

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or scanning back and forth to complete the C-scan.

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When the inspection is complete select pause.

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Review the C-scan and save the data file.

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The data can now be analyzed on the OmniScan flaw detector,

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or on a computer using OmniPC™ or WeldSight™ software.

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www.olympus-ims.com