ON-LINE Acoustic Emission Inspection

Advanced Acoustic Emission (AE) Inspection 

ON-LINE or Off-Line

SENTRO TECHNOLOGIES USA, LLC specializes in Acoustic Emission Inspection and Testing, which can be performed ON-LINE during normal operating conditions.

Acoustic Emission (AE) is a phenomenon of sound and ultrasound wave radiation in materials that undergo deformation or fracture processes. 

Cracking, plastic deformation development, fracture and de-bonding of hard inclusions are examples of macroscopic sources of AE in metals.

Friction and impacts are examples of mechanical AE sources.

 Detection of corrosion products by AE method

Applicable for:

  • Piping – metal, concrete, plastics – all sizes, above ground or under ground 
  • Heat exchangers
  • Storage tanks, including hazardous material
  • Pressure vessels, including  towers and reactors
  • Isolated equipment
  • FRP (Fiberglass) equipment (vessels, pipes)
  • Glass lined equipment


Absolute identification of flaws and  defects – size and location:

  • Corrosion
  • Micro-cracks
  • Holes
  • Blockages
  • Deformation

   Detection of micro-cracks by AE method


Our AE testing method is approved by:

  • ASTM – American Society for Testing and Materials
  • ASME – American Society of Mechanical Engineers
  • European Committee for Standardization
  • International Organization for Standardization
  • Japanese Institute for Standardization
  • Japanese Society for Nondestructive Inspection

   Example of AE signals


     ON-LINE AE Testing of a storage tank

 Results – corrosion rate of storage tank bottom plates


 AE Inspection of underground pipeline 

 AE Inspection of above-ground pipeline

 AE Inspection of FRP pipeline

    AE Inspection of FRP pressure vessel 

 SENTRO AE high frequency sensors and amplifier 

   AE Inspection of a Reactor, total of 36 sensors installed


    SENTRO AE Engineers in action