Richeng
Longitudinal Probes (Straight Beam Probes) are core ultrasonic NDT components designed to generate and receive
longitudinal waves (compressional waves) for internal defect detection and thickness measurement. Engineered for direct contact testing, these probes deliver
high penetration, excellent near-surface resolution, and stable performance across metals, alloys, and composite materials. Ideal for detecting defects parallel to the test surface (e.g., pores, inclusions, delaminations, and voids) in forgings, castings, bars, plates, and shafts.
2. Key Features
- High-Sensitivity Piezoelectric Elements: Adopt high-grade piezo-ceramic/composite chips for strong signal output, high SNR, and minimal noise.
- Dual & Single Element Options:
- Single Element: Cost-effective for general thickness gauging and thick-section flaw detection.
- Dual Element (TR): Separate transmit/receive crystals eliminate near-field blind spots, perfect for thin materials and corrosion mapping.
- Robust Industrial Design: Wear-resistant housing, shockproof structure, and excellent acoustic impedance matching for rough surfaces.
- Wide Frequency Range: 1 MHz–10 MHz available, balancing penetration (low freq.) and resolution (high freq.).
- Compliant with Global Standards: Meet EN 12668-2, ISO 16810, and ASTM A609 for quality and safety.
- Versatile Coupling: Compatible with standard ultrasonic couplants (gel, oil, grease) for easy operation.
3. Main Types of Richeng Longitudinal Probes
3.1 Single Element Straight Beam Probes
- Structure: One piezo-element for both transmitting and receiving ultrasonic waves.
- Applications: General thickness measurement, thick metal inspection (steel, aluminum), and defect detection in forgings/castings.
- Frequencies: 2 MHz, 4 MHz, 5 MHz; common crystal sizes: Φ6 mm, Φ10 mm, Φ12 mm.
3.2 Dual Element (TR) Longitudinal Probes
- Structure: Two independent piezo-elements (transmit/receive) with a small wedge angle.
- Advantages: No near-field dead zone, higher sensitivity to small defects, ideal for thin-walled components (<20 mm).
- Applications: Corrosion inspection, sheet metal testing, and near-surface defect detection.
3.3 Focused Longitudinal Probes
- Design: Acoustic beam focused at a specific depth (15–50 mm) to maximize sensitivity in the target zone.
- Applications: Precision flaw detection in critical components (e.g., nuclear pressure vessels, aerospace parts) and coarse-grained materials.
3.4 High-Temperature Longitudinal Probes
- Specialized: Heat-resistant housing and coupling materials for surface temperatures up to 500°C.
- Applications: In-service inspection of boilers, pipelines, and high-temperature equipment.
3.5 Curved Surface Longitudinal Probes
- Customized: Small crystal sizes (6×6 mm) and flexible housing for curved workpieces (pipes, shafts).
- Applications: OD/ID inspection of tubes, pipes, and cylindrical components.
4. Industrial Applications
Richeng longitudinal probes serve critical NDT needs across key sectors:
- Manufacturing: Forging, casting, and extrusion inspection; raw material quality control (steel plates, bars).
- Oil & Gas: Pipeline corrosion mapping, thickness measurement, and internal defect detection.
- Power Generation: Boiler tube inspection, turbine component testing, and nuclear facility maintenance.
- Aerospace: Structural component inspection, composite material testing, and defect detection in aluminum/ titanium parts.
- Metal Fabrication: Weld root inspection, plate lamination detection, and quality assurance for heavy machinery.
- Automotive: Axle, gear, and engine component testing for internal flaws and material integrity.
5. Why Choose Richeng Longitudinal Probes?
- Factory Direct Pricing: Competitive prices with reliable quality, ideal for bulk orders and long-term partnerships.
- Customization Support: Tailor frequency, size, and design to your unique NDT applications.
- Strict Quality Control: 100% factory tested for sensitivity, resolution, and stability before shipment.
- Global Shipping: Fast delivery to Europe, North America, Asia, and Middle East; professional after-sales service.
- NDT Expertise: Richeng’s decade-long focus on ultrasonic probes ensures deep industry knowledge and technical support.
6. Contact Us
- Email: greyguan@hkrctesting.com
- WhatsApp: +86-131-63088308
- Website: www.richengtesting.com
