Yasuda NO.602 Sunroof Adhesive Bond Strength Tester

Overview

The Yasuda NO.602 Sunroof Adhesive Bond Strength Tester is a purpose-built mechanical testing instrument engineered for quantitative evaluation of adhesive bond integrity between automotive panoramic sunroof glass and its mounting frame or bonding substrate. Unlike general-purpose tensile testers, the NO.602 implements a controlled vertical peel–compression hybrid loading protocol: a precision-machined plunger (vibrator-type actuator) applies axial compressive force normal to the glass surface at its geometric center, while the bonded interface remains constrained within a standardized fixture mimicking real-world installation geometry. The system measures either the peak load (in N or kgf) at interfacial failure—defined as complete debonding or cohesive fracture—or evaluates bond durability under sustained static load by monitoring displacement creep and interfacial delamination progression over time. This methodology aligns with fundamental adhesion mechanics for rigid-to-rigid structural bonds, where stress distribution is governed by substrate stiffness, adhesive layer thickness, and interfacial shear-lag behavior.

Key Features

• Fixed-geometry test fixture replicating OEM sunroof mounting configuration—including adjustable clamping jaws for varying glass edge profiles (e.g., curved vs. flat perimeter bonding zones)
• Manually operated lever-driven loading mechanism with calibrated force transmission path, eliminating hydraulic or servo-control complexity while ensuring high repeatability (±1.5% full-scale typical across 5–200 N range)
• Integrated analog dial gauge with dual-scale readout (N and kgf), zero-adjustable and factory-calibrated traceable to JCSS standards
• Modular base plate compatible with standard optical tables or vibration-isolated lab benches; footprint: 320 × 240 × 480 mm (W × D × H)
• No electrical power requirement—designed for cleanroom, paint shop, or on-line assembly cell deployment where EMI or spark hazards preclude motorized systems
• Tool-free disassembly for routine maintenance and calibration verification per internal SOP-ADH-03

Sample Compatibility & Compliance

The NO.602 accommodates laminated float glass substrates ranging from 3.2 mm to 6.0 mm total thickness, with maximum test area dimensions of 450 × 300 mm. It supports both polyurethane (PU) and silicone-based structural adhesives commonly used in automotive glazing applications. While not a certified metrology device per ISO/IEC 17025, the tester’s mechanical architecture conforms to the functional requirements outlined in JIS K 6850 (Adhesives — Determination of peel strength), ISO 4587 (Adhesives — Determination of tensile lap-shear strength), and ASTM D1002 (Standard Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens). Its output data serves as objective evidence in PPAP submissions and GLP-compliant adhesion validation protocols.

Software & Data Management

The NO.602 operates as a standalone mechanical instrument without embedded firmware or digital connectivity. However, its analog output is fully compatible with third-party data acquisition systems (e.g., National Instruments DAQmx, Keysight 34972A) via optional analog voltage transducer retrofit (0–5 V output proportional to applied load). When integrated into a validated laboratory information management system (LIMS), test records—including operator ID, sample ID, ambient temperature/humidity, and pass/fail status against predefined acceptance thresholds—can be archived with full 21 CFR Part 11 audit trail capability. Calibration certificates are issued annually per JIS Z 8401 and maintained in electronic format with version-controlled revision history.

Applications

• Final verification of adhesive cure state post-UV or thermal post-cure in sunroof module assembly lines
• Comparative screening of alternative adhesive formulations during material qualification (e.g., low-VOC PU vs. fast-cure silane-modified polymers)
• Process capability studies (Cp/Cpk) for bonding parameter optimization (dispense volume, clamp pressure, dwell time)
• Root cause analysis of field returns related to glass detachment or edge lift under thermal cycling
• Supporting ISO/TS 16949 clause 8.5.1.5 (Control of production process) through documented adhesion performance metrics

FAQ

Is the NO.602 compliant with automotive OEM-specific test specifications (e.g., Ford WSS-M99P1111-A, GMW14872)?
Yes—while it does not embed proprietary test sequences, its mechanical configuration and loading methodology satisfy the physical test boundary conditions defined in those standards for static bond strength verification.
Can it be used for non-automotive applications such as architectural glazing or PV module lamination?
It may be adapted for similar rigid-substrate adhesive systems, provided fixture geometry and load range are validated per application-specific engineering review.
Does Yasuda provide calibration services outside Japan?
Calibration support is available globally through authorized service partners accredited to ISO/IEC 17025; local traceability documentation is supplied with each certificate.
What is the recommended recalibration interval?
Annual calibration is advised under normal usage; semi-annual intervals are required in high-throughput production environments exceeding 200 tests/week.
Is operator training included with purchase?
Yes—Yasuda provides a 4-hour on-site or virtual competency-based training session covering safe operation, fixture setup, result interpretation, and basic maintenance procedures.