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Description of stress-strain curves by three parameters

Description: A simple formula is suggested for describing the stress-strain curve in terms of three parameters; namely, Young's modulus and two secant yield strengths. Dimensionless charts are derived from this formula for determining the stress-strain curve, the tangent modulus, and the reduced modulus of a material for which these three parameters are given. Comparison with the tensile and compressive data on aluminum-alloy, stainless-steel, and carbon-steel sheet in NACA Technical Note No. 840 indicates that the formula is adequate for most of these materials. The formula does not describe the behavior of alclad sheet, which shows a marked change in slope at low stress. It seems probable that more than three parameters will be necessary to represent such stress-strain curves adequately.
Date: July 1, 1943
Creator: Ramberg, Walter & Osgood, William R

Effect of rivet pitch upon the fatigue strength of single-row riveted joints of 0.025- to 0.025-inch 24S-T alclad

Description: S-N curves at the range ratio of 0.2 were experimentally obtained for each of the following values of rivet pitch P as used in a single-row lap joint of 0.025- to 0.025-inch 24S-T alclad with one-eight AN430 round-head rivets: p=0.5, 0.75, 1.0, 1.5. Families of constant rivet pitch curves, which define the fatigue life for specimens studied, were developed. Curves showing the variation of the effective stress concentration factor in fatigue with rivet pitch and maximum load per rivet were also established.
Date: July 1, 1943
Creator: Seliger, Victor

Newsmap. Monday, July 5, 1943 : week of June 24 to July 1, 199th week of the war, 81st week of U.S. participation

Description: Front: Text describes action on various war fronts: Army Air Forces. HQ. Air Adjutant General. Publication Division. Maps: [Military action throughout Europe, northern Tunisia and Libya]; Area[s] controlled by Japanese [New Guinea and the Solomon Islands]. Drawing: Low-level strafing attack by a flight of twin-engined DB-3A medium bombers. Photographs: Airfield on Adak, Aleutian Islands; Navy Ventura bomber warms up on landing strip; Parachute bombs at Salamaua. Back: Drawings and text describe survival tactics for those who must abandon ship.
Date: July 5, 1943
Creator: [United States.] Army Orientation Course

Newsmap. Monday, July 12, 1943 : week of July 1 to July 8, 200th week of the war, 82nd week of U.S. participation

Description: Front: Text describes action on various war fronts: Russia, Southwest Pacific, Air offensive, Crete, Kiska. Maps: Key Japanese bases; Solomon Islands; New Georgia Islands, Battle area near Moscow. Photographs: Smoke rises from the Japanese airfield at Munda; Fortress over Huls. Back: Map of the battle area on the Eastern front.
Date: July 12, 1943
Creator: [United States.] Army Orientation Course

Newsmap. Monday, July 19, 1943 : week of July 8 to July 15, 201st week of the war, 83rd week of U.S. participation

Description: Front: Text describes action on various war fronts: Sicily, Air offensive, Russia, New Georgia, New Guinea, Aleutians, Submarines. Includes list of senior commanders in the Invasion of Italy. Maps: New Georgia Islands; American 7th army positions in Licata and Vittoria Italy. Inset map: Italy and surrounding islands. Illustration: Landing on the underside [Allied air attack on ships unloading military cargo on the beaches of Southern Sicily]. Back: Text and color illustrations include various methods of enemy gas applications.
Date: July 19, 1943
Creator: [United States.] Army Orientation Course

Newsmap. Monday, July 26, 1943 : week of July 15 to July 22, 202nd week of the war, 84th week of U.S. participation

Description: Front: Text describes action on various war fronts: Sicily, Rome, Russia, New Guinea, Solomons, Paramushiru. Maps: Rome, Sicily, North Pacific Ocean. Inset maps: Italy and surrounding islands, Paramushiru. Photographs: Central railroad station and San Lorenzo yards in Rome; Escort Carrier B; Depth bomb bounces off side of submarine as another bomb drops into the water; Submarine sinks within 28 minutes; Junkers-52 Transport is reused as an office for an advanced U.S. Army Air Force Base. Back: map of the Pacific and Far East.
Date: July 26, 1943
Creator: [United States.] Army Orientation Course

Round heat-treated chromium-molybdenum-steel tubing under combined loads

Description: The results of tests of round heat-treated chromium-molybdenum-steel tubing are presented. Tests were made on tubing under axial load, bending load, torsional load, combined bending and axial load, combined bending and torsional load, and combined axial, bending, and torsional load. Tensile and compressive tests were made to determine the properties of the material. Formulas are given for the evaluation of the maximum strength of this steel tubing under individual or combined loads. The solution of an example is included to show the procedure to be followed in designing a tubular cantilever member to carry combined loads.
Date: July 1, 1943
Creator: Osgood, William R