Precision Contact Ultrasonic Transducers for Material Testing
Direct-contact ultrasonic tools designed for high-accuracy inspections, flaw detection, and structural diagnostics
Overview
Contact ultrasonic transducers are widely used in non-destructive testing (NDT) due to their high sensitivity, precision, and versatility. These transducers require physical coupling with a test surface—using gel, paste, or liquid—to transmit and receive ultrasonic waves. Their direct-contact nature makes them especially well-suited for detecting flaws, measuring material thickness, and assessing weld integrity in metals, composites, plastics, and other solids.
This webpage introduces the capabilities, applications, and advantages of contact ultrasonic transducers across industrial, research, and field settings. Acoustic Testing Pro provides reliable, industry-compliant systems that support real-time diagnostics and repeatable testing outcomes. We proudly serve B2B clients across North America with rugged, cost-effective solutions engineered for structural health monitoring, inspection compliance, and production quality assurance.
Proven Technologies from Our Trusted Partners
In addition to offering products and systems developed by our in-house team and collaborators for Contact Ultrasonic Transducers, we are proud to carry leading-edge solutions from Global Advanced Operations Tek Inc. (GAO Tek Inc.) and Global Advanced Operations RFID Inc. (GAO RFID Inc.). These partner technologies expand our capabilities in system integration and sensor performance.
Core Components
Hardware Products (from GAO Tek & GAO RFID)
- GAO Tek Dual-Element Contact Transducer
Combines transmit and receive functions in one body—ideal for weld inspection and flaw detection in metals. - GAO Tek Straight Beam Contact Transducer
High-frequency element with rugged casing, built for through-thickness flaw detection in flat or curved surfaces.
- GAO Tek Angle Beam Transducer
Delivers oblique ultrasonic waves into materials for weld root and sidewall inspection per ASME code standards. - GAO RFID Ultrasonic Signal Logger
Captures waveform data from contact probes for remote diagnostics or long-term storage via wireless connectivity.
Software
- GAO Tek Ultrasonic Evaluation Suite (UES)
Offers waveform visualization, defect sizing tools, DAC curve management, and A-scan/B-scan capabilities.
- GAO RFID IoT Gateway
Enables real-time data aggregation from RFID-enabled ultrasonic sensors, supporting cloud review and alerting.
- High Signal Strength – Excellent acoustic coupling enables deeper penetration and precise defect identification
- Multiple Configurations – Available in straight, dual-element, and angle-beam designs for varied inspection tasks
- Durable Housing – Withstands industrial environments, moisture, oil, and mechanical wear
- Broad Frequency Range – 500 kHz to 10 MHz options support both fine-resolution and deep-material inspections
- Quick Coupling – Optimized contact surface and accessory kits reduce preparation time and ensure signal consistency
- Interfaces with standard ultrasonic flaw detectors, thickness gauges, and DAQ systems
- Compatible with GAO Tek signal amplifiers and waveform processors
- Supports analog, USB, and wireless signal pathways
- Seamlessly integrates with PLC, SCADA, and cloud platforms for industrial monitoring
- Weld flaw detection in pipelines, tanks, and structural steel
- Thickness gauging in corrosion-prone materials (e.g., oil & gas lines)
- Crack, inclusion, and delamination detection in metals and composites
- Heat-affected zone (HAZ) inspection in fabricated components
- Quality control in injection-molded or extruded plastic parts
- Oil & Gas and Petrochemical
- Shipbuilding and Marine
- Aerospace and Defense
- Energy and Utilities
- Fabrication and Manufacturing
- Research and Development Labs
- ASTM E317 – Contact Ultrasonic Testing of Welds
- ISO 17640 – Ultrasonic Testing of Fusion Welded Joints
- ASME Section V – NDT Standards for Pressure Vessels
- AWS D1.1 – Structural Welding Code (Steel)
- CSA W59 (Canada) – Welded Steel Construction
Case Studies
United States
Pipeline Weld Inspection,
Houston, TX
A pipeline contractor used our GAO Tek angle beam contact probes for weld inspections across multiple segments. The solution identified internal flaws in real-time, helping ensure full compliance with ASME Section V.
United States
Power Plant Corrosion Assessment,
Illinois
A utility provider deployed our straight beam contact transducers for thickness gauging of corroded boiler walls. Accurate data helped prioritize repairs and reduced unplanned outages.
Canada
Railcar Axle Testing,
Alberta
A Canadian transportation manufacturer integrated contact ultrasonic sensors from Acoustic Testing Pro into their QA process. Reliable defect detection led to a 35% improvement in rework rates and better compliance with CSA W59.
Contact Us
Contact Us today to speak with a specialist, request a quote, or schedule a live demo.