An Advanced Procedure for Curve Testing Using a Drop Tower

JA Joyce; EM Hackett

doi:10.1520/STP26781S

SYMPOSIA PAPER Published: 01 January 1988

STP26781S

An Advanced Procedure for Curve Testing Using a Drop Tower

Source

An improved method to obtain J-R curves from drop-tower fracture mechanics specimens is described in detail. New features include aluminum absorbers to smooth the load versus time record, a double-capacitance gage to locate the crack initiation point, and an analytic key curve to obtain the J-R curve from a test on a single full-size fracture mechanics specimen. The absorbers are shown to slow the initial loading rate but not to affect the displacement rate near crack initiation or during the ductile tearing portion of the drop test.

Drop-tower J-R curves are obtained for a 3% nickel structural steel and compared with static results and results obtained by earlier test methods.

Author Information

Joyce, JA

U.S. Naval Academy, Annapolis, MD

Hackett, EM

David Taylor Naval Ship Research and Development Center, Annapolis, MD

Shipping & Handling

Domestic Shipping

Domestic orders are delivered via United Parcel Service (UPS) or United States Postal Service (USPS). Transit times average 3 to 5 business days. Please be aware that UPS will not deliver packages to Post Office Boxes.

Domestic Rush Orders

Please Contact Us.

International Standard Shipping

International orders are delivered via courier post services which can be either a postal service, courier service, or a combination of both. Standard Service is untraceable. Please allow 4-7 weeks for delivery.

International Expedited Shipping

Please Contact Us.

Please be aware that carriers will not deliver packages to Post Office Boxes. Because of the variability of customs processes and procedures in different countries, ASTM International cannot guarantee transit times to international destinations. Customs duty and taxes are the responsibility of the consignee.

Shipping & Handling charges follow the rate schedule, below:

Order Total	Shipping & Handling Fee (US Domestic)
Up to $50.00	$18.72
$50.01 to $100.00	$20.80
$100.01 to $150.00	$29.52
$150.01 to $250.00	$39.09
$250.01 to $500.00	$56.25
$500.01 to $750.00	$76.42
$750.01 to $1000.00	$93.15
$1000.01 to $1500.00	$121.27
$1500.01 to $2500.00	$158.38
$2500.01 to $4999.00	$209.04
$5000.00 to higher	FREE

Order Total	Shipping & Handling Fee (International)
Up to $50.00	$68.72
$50.01 to $100.00	$70.80
$100.01 to $150.00	$79.52
$150.01 to $250.00	$89.09
$250.01 to $500.00	$106.25
$500.01 to $750.00	$126.42
$750.01 to $1000.00	$143.15
$1000.01 to $1500.00	$171.27
$1500.01 to $2500.00	$208.38
$2500.01 to $4999.00	$259.04
$5000.00 to higher	FREE

Shipping and Handling charges are approximate. Additional charges may be incurred if your order requires multiple shipments. This does not apply to complete sets and sections.

Reprints and Permissions

Reprints and copyright permissions can be requested through the
Copyright Clearance Center

Details

Developed by Committee: E08

Pages: 298–317

DOI: 10.1520/STP26781S

ISBN-EB: 978-0-8031-5063-8

ISBN-13: 978-0-8031-1174-5

An Advanced Procedure for Curve Testing Using a Drop Tower

Author Information

Related

Reprints and Permissions

Details