Ultrasonic Testing

Locating Defects; Measuring Wall Thickness

Computerized UT testing systemsUltrasonic Testing (UT), also known as UT Testing, Ultrasonic Non Destructive Testing and Ultrasonic NDT, can locate internal and external defects in raw materials and parts without causing damage during inspection. In addition, ultrasonic testing services can measure wall thickness in tubular products.

Laboratory Testing Inc., near Philadelphia, PA (USA), performs both contact and high-speed immersion ultrasonic testing services on metal materials.

Fast Ultrasonic Testing with Added Services

Ultrasonic Testing at LTI is set up for fast test results, convenient service and easy order completion. The ultrasonic testing lab runs two fully-staffed work shifts and immersion ultrasonic testing is performed on seven systems.

Immersion UT servicesUT testing services are completed in a large shop area near shipping and receiving with high-capacity cranes and forklifts to easily move large crates and oversize samples. We are also equipped and experienced at providing added in-house services, such as receipt and final inspection, cutting, trimming and deburring, material identification, and special packaging and shipping.

Our in-house collection of over 2,000 UT reference standards for tubing, pipe, bar and plate is a great time saver and makes fast turnaround easy. Any standards not in stock can be quickly manufactured in our own Machine Shop or by our qualified local vendor.

Inspecting Products in a Range of Shapes and Sizes

NDT immersion UTOur immersion UT systems are set up for high-speed inspection of tubing, pipe and round bar stock. Material diameters from 0.125 inch to 6.625 inches are supported and we can handle lengths up to 70 feet.

The contact ultrasonic testing method is used at LTI to inspect larger diameter tubing, pipe and round bar stock from over 6 inches to 30 inches. Contact UT is also performed on other materials, including plate, forgings, flat welds and weld plates to provide information about flaws and inconsistencies.

Meeting Your Requirements

LTI has NADCAP accreditation for immersion ultrasonic testing. The UT testing technicians are certified to ASNT SNT-TC-1A, NAS410 and Pratt & Whitney PWA-NDTQ. NDT Level 2 and 3 inspectors review test results.
In addition, has other qualified inspectors on staff for fast, convenient service, including:

  • NDT MIL-STD-2132 Inspectors and Examiner
  • Pratt & Whitney SIM Level 3
  • On-site DCMA quality assurance rep

The immersion ultrasonic testing equipment is computerized for paperless chart recording and file retention.

Test Methods/Specifications

LTI performs ultrasonic testing to a wide variety of military, commercial, and customer specifications, including:

AMS 2631 ASTM A577 MIL-STD-271
AMS-STD-2154 / ASTM E2375 ASTM A578 P&W SIM-4
ASME B&PV Section III & V ASTM E213 P&W SIM-314
ASME B16.34, Annex E MIL-C-15726F QQ-N-281D
ASTM A388 MIL-STD-16420K QQ-N-286F/G
ASTM A435 MIL-STD-2132 T9074-AS-GIB-010/271

LTI is your answer for fast, one-stop inspection. Ask us to provide pricing and turnaround information for your next ultrasonic testing order.

The NDT Ultrasonic Testing Process

During UT testing, an ultrasound probe connected to the test equipment transmits short pulses of high-frequency sound waves into the item being inspected while passing over its surface. A defect or inconsistency will cause some of the energy to be reflected. Sound pulses are displayed on a screen when reflected from features within the test material. The technician interprets these reflected signals to determine if the product or material is defective or acceptable according to the test specification or requirements.

Immersion ultrasonic testing takes place in water which conducts the sound waves between the probe and test material. The process is partially automated and eliminates the need for direct contact with the test material during inspection. During contact ultrasonic testing, an ultrasonic probe emitting sound waves is manually run over the surface of the test piece. The immersion technique is preferred because it can be faster and more accurate.

Watch the Immersion UT process in the Video below.

LTI Capabilities

  • UT Testing Systems – immersion and contact
  • Reference Standards – over 1,500 immersion and 500 contact standards in stock
    • In-house manufacturing capabilities and a local qualified vendor for others
  • Added Services, available upon request
    • Receipt and final inspection
    • Cutting, trimming and deburring
    • Packaging / Shipping in accordance with ANSI N45.2.2 and customer specifications
    • Material identification – line marking, stenciling, electrochemical etching
  • NDT MIL-STD-2132 Examiner and P&W SIM Level 3 on staff
  • Government Source Inspection

News & Articles

Ultrasonic Testing is Reliable for Defects and Measurement

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Tools & Resources

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Quality & Convenience

  • A2LA and NADCAP accreditations
  • ISO 17025 certification
  • Same day, next-day, 2nd-day Rush Services
  • Secure Portal to track orders and get certifications
  • Fast Certified Reports sent by email

Customer Testimonials

“I wanted to take the time to personally thank you for the time and effort that LTI has put into the testing involved with our orders. Your staff has been invaluable over the last several years. Additionally, the fact that you are now able to perform Fracture Toughness testing in house has already proven priceless in both the turnaround time and in getting my questions answered. I’ve been fortunate to have worked with LTI since 1986 and I have come to think of LTI as an extension of Dubose. I look forward to our continued relationship.”

Dave Stepp,
Quality Assurance Manager


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