ASTM D5824-98 (2023) PDF

Full title and description

Standard Test Method for Determining Resistance to Delamination of Adhesive Bonds in Overlay‑Wood Core Laminates Exposed to Heat and Water — a short, 5‑page ASTM test method (designation D5824‑98, reapproved 2023) that describes specimen preparation, conditioning, accelerated exposure and measurement procedures used to evaluate the quality of the adhesive bond between an overlay (veneer, HPL, HDPE, FRP, etc.) and a wood‑based core (finger‑jointed lumber, particleboard, OSB, hardboard, etc.).

Abstract

ASTM D5824‑98 specifies a laboratory procedure to determine resistance to delamination of adhesively bonded overlay–wood core laminates when exposed to heat and water. Panels are prepared, conditioned, then subjected to accelerated wet/heat exposure (autoclave/vacuum‑pressure cycles and oven drying) and evaluated by measuring end, edge and total percent delamination along exposed bondlines; results are reported as percent delamination and summary statistics for use in product development, quality control and bonding process monitoring.

General information

• Status: Reapproved / Current (ASTM D5824‑98(2023)).
• Publication date: Original: March 1998 (D5824‑98); reapproved in 2023 (reapproval published May 2023 in ASTM listings).
• Publisher: ASTM International.
• ICS / categories: 79.060.01 (Wood‑based panels — general).
• Edition / version: D5824‑98, reapproved 2023 (often cited as D5824‑98(2023) or D5824‑98R23).
• Number of pages: 5 pages (concise test method).

Scope

This method provides a repeatable procedure to assess the quality of the adhesive bond between overlays and wood cores by measuring resistance to delamination after specified heat and water exposures. It applies to a variety of overlays and wood cores used in windows, doors, overlaid panels and similar products, and is intended for adhesive development, manufacturing quality control and process monitoring. Values are given in inch‑pound units as standard.

Key topics and requirements

• Purpose: quantify resistance to delamination of overlay–wood core laminates under accelerated heat and water exposure.
• Specimen preparation: assembly and curing of test panels with overlay orientation and core grain control; edge and end surfaces exposed for delamination measurement.
• Conditioning and exposure cycles: forced‑air oven drying (typical drying temperature ~170°F / 77°C ± a few degrees) and vacuum/pressure (autoclave) wet exposure cycles (vacuum and elevated pressure specified) as described in the method.
• Measurements and calculations: percent end delamination, percent edge delamination and percent total delamination are calculated by dividing delaminated length by exposed bondline length and multiplying by 100; results summarized as means, maximum/minimum and standard deviations.
• Reporting and precision: the method specifies reporting of adhesive identification, overlay/core types and thicknesses, conditioning details, number of panels/specimens and individual test results; round‑robin data filed with ASTM show notable variability and provide repeatability/reproducibility context.
• Applications: suitable for product development, manufacturing QC and monitoring of bonding processes for window/door components and other overlaid wood products.

Typical use and users

Users include adhesive manufacturers, wood‑panel and component producers (windows, doors, furniture, laminated panels), independent test laboratories, quality assurance teams and R&D groups evaluating adhesive formulations and bonding processes. The test is also referenced by standards committees and specification writers concerned with delamination performance of bonded wood products.

Related standards

Related ASTM and international standards for adhesives and wood bonding performance include ASTM specifications and test methods referenced for delamination and bonded‑laminate evaluation (for example, test and specification standards used in laminated wood products such as D2559 and other D‑series methods), and ISO methods addressing resistance to delamination for indoor wood products. Users commonly consult these in conjunction with D5824 when setting acceptance criteria.

Keywords

delamination; adhesive bonds; overlay; veneer; laminate; wood core; high‑pressure laminate (HPL); particleboard; OSB; autoclave; oven drying; percent delamination; adhesive testing; bonding quality.

FAQ

Q: What is this standard?

A: ASTM D5824‑98 is a standard test method that defines a laboratory procedure to determine resistance to delamination of adhesive bonds in overlay–wood core laminates exposed to heat and water. It is concise (about 5 pages) and intended for product development and quality control.

Q: What does it cover?

A: It covers specimen preparation, conditioning, accelerated exposure (oven and vacuum/pressure/autoclave cycles) and measurement/reporting of percent delamination (end, edge and total) for bonded overlay/wood core panels. The method specifies how to calculate and report results and gives precision context from round‑robin data.

Q: Who typically uses it?

A: Adhesive formulators, wood panel and component manufacturers (doors, windows, furniture), independent testing labs, and QA/R&D teams use D5824 to screen adhesives, monitor production bonding and verify compliance with performance requirements. Standards committees and specifiers may also reference the method.

Q: Is it current or superseded?

A: The 1998 designation (D5824‑98) has been reapproved in 2023 and is listed as the current/reapproved version (often cited as D5824‑98(2023) or D5824‑98R23). The original issuance date is 1998, with reapproval activity recorded in 2017 and 2023 history entries. Users should order the D5824‑98(2023) reapproval text for the current wording.

Q: Is it part of a series?

A: D5824 is part of the body of ASTM D‑series standards covering adhesives, bonded wood products and laminate testing. It is used alongside related D‑standards and national/international methods that address delamination, durability and adhesive performance for wood products.

Q: What are the key keywords?

A: Key keywords are delamination, adhesive bonds, overlay, veneer, laminate, wood core, percent delamination, autoclave, oven drying, and bonding quality. These reflect the method’s focus and common search terms used by users seeking this test.