SUNS Instrumented Pendulum Impact Tester DV-150/300/450/600/750

Overview

The SUNS Instrumented Pendulum Impact Tester (Model Series DV-150 to DV-750) is a precision-engineered physical property testing system designed for instrumented Charpy and Izod impact testing of metallic, polymeric, and composite materials. Based on the classical pendulum principle with integrated high-speed force transduction and real-time displacement sensing, this tester captures dynamic mechanical response during fracture events at microsecond resolution. Unlike conventional non-instrumented impact testers, the DV series delivers full waveform data—force vs. time, energy vs. time, force vs. displacement, and energy vs. displacement—enabling quantitative analysis of crack initiation, propagation, and arrest behavior. It is engineered for laboratories requiring traceable, repeatable, and standards-compliant impact characterization under ISO 148-1, ASTM E23, and GB/T 19748–2005 frameworks.

Key Features

• Multi-energy capacity configuration: Selectable nominal impact energies of 150 J, 300 J, 450 J, 600 J, and 750 J—each calibrated per GB/T 3808–2002 and verified against national metrological standards (JJG 145–2007).
• Integrated high-fidelity instrumentation: Dual-sensor architecture combining a piezoelectric load cell (±0.5% FS accuracy) and linear variable differential transformer (LVDT) for synchronized force and displacement acquisition at ≥1 MHz sampling rate.
• Real-time dynamic parameter extraction: Automatic computation of key fracture metrics—including yield force, maximum force, crack initiation energy, total absorbed energy, and post-yield energy dissipation—directly from raw waveform data.
• Interactive waveform analysis: Click-and-drag cursor functionality enables precise interrogation of instantaneous force and cumulative absorbed energy at any point along the impact event timeline.
• Modular hammer and anvil design: Interchangeable pendulum hammers and support anvils compliant with ISO 148-1 (Charpy) and ISO 180 (Izod) geometries; V-notch and U-notch specimen holders included.
• Rigid cast-iron frame with vibration-damping base: Ensures mechanical stability and signal integrity during high-energy impact cycles, minimizing environmental noise coupling into sensor outputs.

Sample Compatibility & Compliance

The DV series accommodates standard Charpy (10 mm × 10 mm × 55 mm) and Izod specimens, as well as sub-sized variants (e.g., 5 mm × 5 mm, 7.5 mm × 10 mm) per ASTM E23 Annex A2 and GB/T 229. Specimen notch machining—V-type (45°, 2 mm depth, 0.25 mm root radius) or U-type—is supported by optional SUNS notching milling systems (sold separately), ensuring geometric conformity per ISO 148-3. All instruments are supplied with factory calibration certificates traceable to CNAS-accredited reference standards. System-level compliance includes GB/T 3808–2002 (verification of pendulum impact machines), JJG 145–2007 (metrological verification), and GB/T 19748–2005 (instrumented impact testing methodology). Data acquisition and reporting modules support audit-ready documentation aligned with GLP and internal QA protocols.

Software & Data Management

The proprietary ImpactTest Pro software (v5.x, Windows 10/11 compatible) provides full control over test execution, real-time waveform visualization, and automated report generation. Each test produces a structured XML-based data file containing raw sensor traces, metadata (operator ID, timestamp, environmental conditions), and computed parameters—ensuring long-term data integrity and interoperability. Reporting templates conform to ISO/IEC 17025 requirements, including uncertainty estimation for absorbed energy (k = 2). Optional 21 CFR Part 11-compliant module available upon request, featuring electronic signatures, role-based access control, and immutable audit trails for regulated environments (e.g., aerospace material certification, medical device component validation).

Applications

• Metallurgical R&D: Quantifying ductile-to-brittle transition temperature (DBTT) shifts in pipeline steels, pressure vessel alloys, and nuclear-grade materials.
• Automotive component qualification: Validating impact performance of structural thermoplastics (e.g., PPA, PPS), short-fiber composites, and aluminum die-castings under crash-relevant strain rates (~10²–10³ s⁻¹).
• Standards laboratory accreditation: Serving as primary reference equipment for ISO/IEC 17025-accredited testing labs performing third-party impact certification per ASTM E23, ISO 148, or GB/T 229.
• Failure analysis laboratories: Correlating instrumented waveforms with fractographic evidence (SEM/EDS) to distinguish cleavage, dimple, or intergranular fracture modes.
• Educational institutions: Supporting advanced materials science curricula through hands-on demonstration of dynamic fracture mechanics principles.

FAQ

What standards does the SUNS DV-series impact tester comply with?
It meets GB/T 3808–2002 (instrument verification), JJG 145–2007 (metrological calibration), and GB/T 19748–2005 (instrumented test methodology), with hardware geometry conforming to ISO 148-1 and ASTM E23 requirements.
Can the system be used for both Charpy and Izod configurations?
Yes—interchangeable anvils and striker assemblies allow rapid reconfiguration between standardized Charpy (three-point bending) and Izod (cantilever beam) test modes.
Is waveform data export supported in industry-standard formats?
Raw and processed data can be exported as CSV, ASCII, or XML; proprietary .itp files retain full metadata and are readable across all versions of ImpactTest Pro software.
Does the system include calibration documentation?
Each unit ships with a factory calibration certificate referencing CNAS-traceable standards, covering energy scale, force transducer linearity, and displacement sensor resolution.
Are notched specimens prepared in-house or outsourced?
While the DV tester itself does not mill notches, SUNS offers dedicated impact notch milling machines (e.g., NM-500 series) designed to produce ISO-compliant V- and U-notches with certified dimensional accuracy.