On the Stability of Layered Composites Under Cyclic Load, Part II
Continuation of the Part I fatigue study. Reports observed behavior of three laminate configurations through 10⁵ load cycles, with notes on early failure indicators.
Series
Recent Technical Notes
A Bench Method for Demonstrating Standing Waves in Open Pipes
Describes a repeatable demonstration apparatus suitable for secondary-school use, with construction notes and a discussion of common measurement errors.
Calibration Records for the East Wing Acoustic Bench, 2020–2025
Five years of calibration data for the laboratory's principal acoustic bench, released as a reference set for instructional purposes.
Environmental Sound Survey: Three Sites, Four Seasons
Field report of a year-long acoustic survey at three outdoor sites. Includes methodology suitable for adaptation as a student field exercise.
Notes on the Preparation of Classroom Demonstration Materials
Prepared by the Education Office. Guidance for adapting bench demonstrations to classroom conditions, with safety practice and materials substitutions.
The index lists publicly released items only. Numbering gaps reflect internal documents not cleared for release.
Reports
Annual Public Summaries
Annual Public Summary, 2025
General account of the laboratory's public work for the year, prepared by the documentation group.
Annual Public Summary, 2024
General account of the laboratory's public work for the year, prepared by the documentation group.
Annual Public Summary, 2023
General account of the laboratory's public work for the year, prepared by the documentation group.
The 2026 summary is in preparation and is anticipated in the second half of the year. Earlier summaries are held in the archive and may be requested in print.
Requests
Obtaining Copies
Digital copies of listed items are provided on request at no charge. Print copies are produced in small runs and mailed as supply permits. All requests should identify the item by its index number and be directed to the Office of Public Inquiry.