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ndt, nondestructive testing equipment for sale, geophysical testing, crosshole sonic logging equipment, csl testing, testing drilled shafts, testing concrete thickness, testing bridge decks for voids, testing bridge decks for delamination, structural radar imaging Measuring Risks, Mitigating Concerns
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Olson Instruments, Nondestructive Testing Equipment, Nondestructive Evaluation, Olsen | Testing Infrastructure Nondestructively

honeycomb, delaminations, voides, ASTM C1383-04, impact echo scanning, shallow voids, Olson Engineering, Olson, concrete thickness

February 22, 2020

East Coast

NDE users seminar offered at Olson's Rockville MD office

March 10-12 2020

Click here for details

NDT System Add-On — Impact Echo Scanning

USA Sales: 303.423.1212          International Sales: Click here for Agents

Impact Echo Scanner

click here for method graphic [+]
Base Model:
IES [Impact Echo Scanner]

*Sold to US Government Agencies & Universities, as well as approved International sales. For consulting services using the IES method, call 303.423.1212 for details.

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Scroll down to see a list of Key Features and Models available for the Impact Echo Scanner Add-on System.

Save money! Contact Olson Instruments when adding on to an existing system, or purchasing multiple systems as some of the components are common to other test methods.

Contact Olson Instruments for complete details about the Impact Echo Scanning system available as an add-on test with the Freedom Data PC or NDE 360 platforms.

For a quote, call our toll free number at 1-888-423-1214 or fill out our


*Impact Echo Scanning (IES) investigations are performed on large structural members with smooth concrete where shallow voids, honeycomb, cracking or delaminations are of primary concern.

The Impact Echo Scanning (IES) system is designed for large area investigations of shallow voids, debonding/delamination, cracking, or honeycomb often found between an overlay on a bridge deck or surrounding dense rebar mats. IES is commonly used to evaluate post-tensioning (PT) cables used in reinforcing various structures and determining duct grout condition. The scanning technology allows tracing of ungrouted PT cables through slabs and beams. An advantage of the IES method is that only one side of the structure needs to be accessible for testing.

The IES Method is based on the Olson Engineering patented technology of a rolling transducer and automated impactor for near-continuous Impact Echo based thickness and flaw scanning of structural concrete and pavements. Performed at slow walking speeds, test results are obtained every inch (25 mm) in a line and multiple lines can be combined for 2-D to 3-D displays of concrete thickness and locations of internal void, honeycomb, cracking, delamination, etc. The scanning method is capable of determining bottom echo thicknesses up to ~ 40 inches (1 m).

Freedom Data PC or NDE 360 Platform
Required, Sold Separately
Freedom Data PC
NDE 360


Hands-on training is available for all of our Nondestructive Testing Methods at our Wheat Ridge, Colorado (USA) location, which is a suburb located appromately 15 minutes northwest of downtown Denver. Training may be available at your location by one of our agents upon special arrangement.


Applicable On:

  • Beams
  • Bridge Decks
  • Columns
  • Dams
  • Pavements
  • Pipes
  • Post-Tensioned Ducts
  • Runways
  • Slabs
  • Tunnels
  • Walls

Test For:

  • Cracks
  • Delaminations
  • Honeycomb
  • Thickness
  • Voids

Meets ASTM:

  • ASTM C1383-04

Meets ACI:

  • N/A


All of Olson Instruments have been researched, tested, and used on-site daily by our sister company, Olson Engineering, world reknowned for NDT consulting. The OE Website is loaded with Tech Brief and project photos using the equipment shown on this website. Purchase our products to “do-it-yourself”, or hire an Olson Engineering Nondestructive Testing professional for your next project