Ultrasonic Bar & Tube Testing
High-Precision NDT for Round Stock, Tubing, and Bar Materials. Mitchell Laboratories offers specialized ultrasonic testing solutions for barstock, tubing, and convex materials, using automated rotational and immersion systems for accurate, efficient flaw detection.
What Is Ultrasonic Bar & Tube Testing?
Ultrasonic Bar & Tube Testing is a non-destructive method designed to detect internal and surface flaws in cylindrical and convex components, such as barstock and tubing.
Advantages of Ultrasonic Bar & Tube Testing
- Full-Volume Internal Inspection: Ultrasonic testing penetrates deep into the material to detect and characterize internal flaws that surface-based methods cannot identify.
- Adaptable to All Sizes: From barstock under 0.20″ diameter to heavy forgings over 40″ wide and 6000 lbs, Mitchell’s systems are optimized for both short and long product forms.
- High Sensitivity & Flaw Detection: Simultaneous longitudinal and shear wave inspections provide precise identification of cracks, inclusions, and discontinuities—critical for aerospace and industrial-grade materials.
- Automated 5-Axis Scanning Systems: Advanced equipment supports rotational and multi-axis inspection using scanning bridges and turntables up to 36″, ensuring thorough and repeatable testing.
- C-Scan, B-Scan, and S-Scan Imaging: Digital ultrasonic data is captured and presented in high-resolution maps for complete flaw sizing, location, and evaluation.
- Flexible Data Delivery: Results are available in printed reports or Windows-compatible digital formats to support traceability, QA, and documentation needs.
- Non-Destructive & Radiation-Free: Unlike radiographic testing, ultrasonic waves are harmless to operators and nearby equipment, allowing safe testing in various environments.
- Compact & Efficient Workflows: Immersion systems like the TacTic enable full inspection without oversized tanks, making testing more space- and time-efficient for production runs.
Limitations of Ultrasonic Bar & Tube Testing
While ultrasonic testing offers excellent sensitivity and full volumetric coverage, there are a few key considerations for customers:
- Requires Clean, Machined Surfaces
- Not Ideal for Porous or Composite Materials
- Increased Setup and Calibration Time for Custom Parts
- Limited Effectiveness on Extremely Thin Wall Sections
Basic Principles of Ultrasonic Bar & Tube Testing
Ultrasonic Testing (UT) uses high-frequency sound waves to detect internal flaws in metal components. Reflected signals from cracks or inclusions are analyzed to evaluate part integrity without causing damage.
At Mitchell Laboratories, we use immersion tanks, rotating systems, and 5-axis scanning bridges to inspect barstock and tubing of various sizes. From sub-0.20 inch diameters to parts over 40 inches wide and 6,000 pounds, our systems perform simultaneous longitudinal and shear wave inspections. Digital B-Scan, C-Scan, and S-Scan data ensure precise, aerospace-grade results.
Common Applications
- Landing Gear & Structural Rods
- Hydraulic & Pneumatic Tubing
- Engine Shafts & Spindles
- Heat Exchanger Tubes
- Aerospace-Grade Barstock
- Precision Machining Stock
Quality Assurance & Compliance
- ISO 9001 & AS9100D Certified
Our procedures meet the latest ISO 9001 quality-management standards and AS9100D aerospace requirements. - ITAR Registered
Full compliance with International Traffic in Arms Regulations for defense and government work. - NADCAP Accreditation
Nadcap-approved processes at our Pico Rivera, Fontana, and South Gate facilities, ensuring industry-recognized special-process controls. - 100% Dimensional Traceability
Batch-lot tracking from raw material to final inspection report, with documented tolerances down to ±0.001″. - In-House Chemical & Metrology Labs
Verification and monitoring of UT scan system calibration, rotational accuracy, and transducer performance. - Qualified, Certified Personnel
Technicians trained per SNT-TC-1A and NAS 410 standards for ultrasonic bar and tube inspection, including phased array and rotational UT. - Continual Improvement Program
Regular internal audits and customer-driven process reviews to optimize quality and delivery.
Frequently Asked Questions
We can inspect bar and tube materials from under 0.20” in diameter up to over 40”, and lengths exceeding 20 feet.
Yes. We use drop-in rotating machines specifically for short barstock sections that are too small for full-length TacTic scanning.
Yes. Several systems are phased array ready, enabling C-Scan, B-Scan, and S-Scan outputs for detailed flaw detection and mapping.
Yes. Our heavy-duty rotational systems can test parts up to 6000 lbs, ensuring reliable inspections for high-mass components.
Lead times are quoted on a job-by-job basis to ensure accuracy, and we’re happy to accommodate emergency or rush requests. Backed by decades of refining our expedited process under strict deadlines, we minimize turnaround without ever sacrificing quality, returning your parts quickly and reliably.