A Perspective on R-Curves and Instability Theory

DE McCabe; HA Ernst

doi:10.1520/STP37094S

SYMPOSIA PAPER Published: 01 January 1983

STP37094S

A Perspective on R-Curves and Instability Theory

Source

Several aspects of elastic-plastic R-curve theory and instability analysis are discussed. It is shown how material flow property effects can be incorporated into the R-curve in place of the more common practice of incorporation into J crack drive. Formulas for deformation theory J that adjust for slow-stable crack growth in compact (CT) and center cracked tension (CCT) specimens are presented. For cases of extremely large crack extension where conditions of deformation theory J are violated, an expression for modified J also is presented. J_R-curve data obtained from a 4T size compact specimen were used to predict instability in a displacement controlled CCT test for 2024-T351 aluminum.

Author Information

McCabe, DE

Westinghouse Research and Development Center, Pittsburgh, Pa.

Ernst, HA

Westinghouse Research and Development Center, Pittsburgh, Pa.

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: 561–584

DOI: 10.1520/STP37094S

ISBN-EB: 978-0-8031-4857-4

ISBN-13: 978-0-8031-0728-1

A Perspective on R-Curves and Instability Theory

Author Information

Related

Reprints and Permissions

Details