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Effect of Aging on Mechanical Properties of Aluminum-Alloy Rivets

Description: "Curves and tabular data present the results of strength tests made during and after 2 1/2 years of aging on rivets and rivet wire of 3/16-inch nominal diameter. The specimens were of aluminum alloy: 24S, 17S, and A17S of the duralumin type and 53S of the magnesium-silicide type" (p. 1).
Date: April 1941
Creator: Roop, Frederick C.
Partner: UNT Libraries Government Documents Department

Effect of Variation in Rivet Diameter and Pitch on the Average Stress at Maximum Load for 24S-T3 and 75S-T6 Aluminum-Alloy, Flat, Z-Stiffened Panels That Fail by Local Instability

Description: "A study is made of the effect of variation in diameter and pitch of A17S-T4 aluminum-alloy flat-head rivets on the average stress at maximum load for 24S-T3 and 75S-T6 aluminum-alloy, flat, Z-stiffened panels that fail by local instability. A curve is presented for determining the diameter and pitch required to insure the development of a given average stress for local instability" (p. 1).
Date: July 1950
Creator: Dow, Norris F. & Hickman, William A.
Partner: UNT Libraries Government Documents Department

Data on optimum length, shear strength, and tensile strength of age-hardened 17S-T machine-countersunk rivets in 75S-T sheet

Description: Report presenting a series of tensile-strength and shear-strength tests made on age-hardened 17S-T rivets machine-countersunk in 75S-T sheets. The results of the tests indicated that the joints can be made satisfactorily with regard to both flushness and strength if the ratio of buck to diameter is kept to a certain value.
Date: March 1947
Creator: Schuette, Evan H. & Niles, Donald E.
Partner: UNT Libraries Government Documents Department

Fatigue Tests on 1/8-inch Aluminum Alloy Rivets

Description: Note presenting an investigation of the fatigue characteristics of riveted joints in aluminum alloy sheet. The purpose of this report is to summarize all the results of fatigue tests that have been made to date in the Aluminum Research Laboratories of lap joints with 1/8-inch aluminum alloy rivets.
Date: February 1945
Creator: Andrews, H. J. & Holt, M.
Partner: UNT Libraries Government Documents Department

Mechanical Properties of Aluminum-Alloy Rivets

Description: "The development of metal construction for aircraft has created a need for accurate and detailed information regarding the strength of riveted joints in aluminum-alloy structures. To obtain this information the National Bureau of Standards in cooperation with the National Advisory Committee for Aeronautics is investigating the strength of riveted joints in aluminum alloys. The strength of riveted joints may be influenced by the form of the head, the ratio of the rivet diameter to the sheet thickness, the driving stress, and other factors" (p. 1).
Date: November 1936
Creator: Brueggeman, W. C.
Partner: UNT Libraries Government Documents Department

Creep and Creep-Rupture Characteristics of Some Riveted and Spot-Welded Lap Joints of Aircraft Materials

Description: Note presenting a description of equipment and test technique used in the creep testing of lap joints. Riveted aluminum-alloy joints fabricated from 75S-T6 and 24S-T3 sheet with 24S and 24S-T31 rivets were tested at 300, 400, and 500 degrees Fahrenheit. The test results showed that the creep of the riveted joints is considerably greater than the creep of the unriveted sheet although not so large that the creep of the sheet is negligible compared with that of the joints.
Date: June 1955
Creator: Mordfin, Leonard
Partner: UNT Libraries Government Documents Department

A preliminary study of machine-countersunk flush rivets subjected to a combined static and alternating shear load

Description: Report discusses the results of an investigation to study the effect of the height of a rivet head on the number of cycles required to cause failure of a machine-countersunk flush-riveted joint under a combined static and alternating shear load. A tight joint and a loose joint were tested and the number of cycles to failure and location of fatigue failure were compared.
Date: December 1943
Creator: Crate, Harold
Partner: UNT Libraries Government Documents Department

The longitudinal shear strength required in double-angle columns of 24S-T aluminum alloy

Description: From Summary: "Tests were made of riveted double-angle columns to determine the total rivet strength that is required to make these built-up columns develop the strength predicted by the standard column formulas. Results of the tests led to the conclusion that the required rivet strength may be calculated by the beam method of design."
Date: May 1943
Creator: Kuhn, Paul & Moggio, Edwin M.
Partner: UNT Libraries Government Documents Department

Comparative tests of the strength and tightness of commercial flush rivets of one type and NACA flush rivets in machine-countersunk and counterpunched joints

Description: Report discusses an investigation that was conducted to compare the strength and tightness of machine-countersunk flush-riveted joints assembled with NACA flush rivets and a type of commercial flush rivet. A comparison was also generated between the strength and tightness of counterpunched flush-riveted joints assembled with the same types of rivet. NACA's flush-riveted joints tended to be stronger and tighter than the commercial joints.
Date: February 1, 1944
Creator: Mandel, Merven W.
Partner: UNT Libraries Government Documents Department

Effect of variation in diameter and pitch of rivets on compressive strength of panels with Z-section stiffeners: 1: panels with close stiffener spacing that fail by local buckling

Description: From Summary: "An experimental investigation is being conducted to determine the effect of varying the rivet diameter and pitch on the compressive strength of 24S-T aluminum-alloy panels with longitudinal Z-section stiffeners." The average stress at failing load for each rivet diameter, depth of countersink, and pitch of rivet is provided.
Date: August 1945
Creator: Dow, Norris F. & Hickman, William A.
Partner: UNT Libraries Government Documents Department

Shear tests on DuPont explosive rivets with the countersunk head milled flush after expansion

Description: Report discusses the results of shear testing in which the heads of Du Pont explosive countersunk rivets were allowed to protrude above the skin surface before expansion and the protruding portions were removed after expansion. As the height of the rivet head above the skin increases, the tightness of the rivet was found to increase. The report concludes that it may be desirable to investigating filling an entire shank with an explosive charge in order to permit greater tolerances in the drilled hole diameter and still have consistently tight rivets.
Date: May 1943
Creator: Gottieb, Robert & Bartone, Leonard M.
Partner: UNT Libraries Government Documents Department

Tests of hydraulically expanded rivets

Description: Report discusses the results of an investigation into the tightness, shear strength, tensile strength, and life under pulsating loads of hollow, hydraulically expanded rivets made of 17S-T aluminum alloy. The countersunk-head rivets with inserts had a much higher maximum load in shear than the modified-roundhead rivets, which did not have inserts.
Date: March 1944
Creator: Mandel, Merven W.; Crate, Harold & Schuette, Evan H.
Partner: UNT Libraries Government Documents Department

Tensile Tests of NACA and Conventional Machine-Countersunk Flush Rivets

Description: An investigation was conducted to determine and compare the tensile strength of NACA and conventional machine-countersunk flush rivets of several rivet-head angles and varying countersunk depth. The results of the investigation are presented in the form of curves that show the variation of the tensile strength of the rivet with the ratio of the sheet thickness to the rivet diameter. For the same rivet-head angle and for a given angle of c/d, the NACA rivets developed higher tensile strength than the conventional rivets.
Date: October 1944
Creator: Bartone, Leonard M. & Mandel, Merven W.
Partner: UNT Libraries Government Documents Department

Comparison of tightness of 78 degrees machine-countersunk rivets driven in holes prepared with 78 degrees and 82 degrees countersinking tools

Description: Report presenting an investigation to determine whether the use of a 78 degree countersinking tool instead of a 82 degree countersinking tool for riveting would substantially alter the conclusion reached in a previous paper regarding the placement of rivets for maximum strength.
Date: September 1942
Creator: Gottlieb, Robert & Mandel, Merven W.
Partner: UNT Libraries Government Documents Department

Preliminary investigation of the relation of the compressive strength of sheet-stiffener panels to the diameter of rivet used for attaching stiffeners to sheet

Description: Report discusses the results of compressive testing of 24S-T aluminum-alloy sheet-stiffener panels with five ratios of stiffener thickness to sheet thickness. For each ratio, rivets of five different diameters were used to attach the stiffeners to the sheets. The compressive strengths were found to increase with an increase in the diameter of the rivets until the ratio of rivet diameter to over-all thickness reached a certain point.
Date: November 1944
Creator: Dow, Norris F. & Hickman, William A.
Partner: UNT Libraries Government Documents Department

Progress Summary Number 1: Mechanical Properties of Flush-Riveted Joints Submitted by Five Airplane Manufacturers

Description: Summary presenting information on flush-riveted joints for aircraft construction, including the strength, occurrence of defects, and effect of the angle of rivet head. The current tests covers specimens from 15 manufacturers of which 5 series have been completed and are described in this report.
Date: February 1942
Creator: Brueggeman, William Charles
Partner: UNT Libraries Government Documents Department

Effect of Countersunk Depth on the Tightness of Two Types of Machine-Countersunk Rivet

Description: Bulletin presenting an investigation conducted to determine the effect of countersunk depth on the tightness of two types of machine-countersunk flush rivet. The specimens tested in the study were simple lap joints made by two different riveting methods. The results indicated that roundheaded rivets inserted from the back of the joint with the countersunk heads formed int he driving of the rivets produce tighter joints over a large range of depths than ordinary flush rivets.
Date: October 1942
Creator: Gottlieb, Robert
Partner: UNT Libraries Government Documents Department

A Study of the Tightness and Flushness of Machine-Countersunk Rivets for Aircraft

Description: Bulletin presenting the results of an investigation to determine possible improvements in the tightness and the flushness of machine-countersunk rivets. Specimens used in the study were simple lap joints made by different riveting methods. The results indicate that a comparison of the quality of machine-countersunk riveted joints on the basis of maximum load alone is not justified.
Date: June 1942
Creator: Lundquist, Eugene E. & Gottlieb, Robert
Partner: UNT Libraries Government Documents Department

Effect of Aging on Mechanical Properties of Aluminum-Alloy Rivets

Description: "Curves and tabular data present the results of strength tests made during and after 2 1/2 years of aging on rivets and rivet wire of 3/16-inch nominal diameter. The specimens were of aluminum alloy: 24s, 17s, and a17s of the duralumin type and 53s of the magnesium-silicide type" (p. 353).
Date: February 7, 1941
Creator: Roop, Frederick C.
Partner: UNT Libraries Government Documents Department

Tensile tests of round-head, flat-head, and brazier-head rivets

Description: An investigation was conducted to determine the tensile strength of round-head (AN43C), flat-head(AN442), and brazier-head (AN4556) aluminum-alloy rivets because of the scarcity of information on the tensile strength of rivets. The results of the investigation are presented as curves that show the variation of the ratio of the tensile strength of the rivet to the tensile strength of the rivet crank with the ratio of the sheet thickness to the rivet diameter for the different types of rivet.
Date: March 1944
Creator: Schuette, Evan H.; Bartone, Leonard M. & Mandel, Merven W.
Partner: UNT Libraries Government Documents Department

Interface Thermal Conductance of Twenty-Seven Riveted Aircraft Joints

Description: Note presenting testing of twenty-seven structural joint specimens of 2024-T3 and 2024-T4 aluminum alloy consisting of a T-stringer riveted to a 10- by 10-inch skin surface under simulated aerodynamic heating with no external loading applied. Rivet size and pitch were found to influence the conductance but the rivet materials tested had no observable effect.
Date: July 1957
Creator: Barzelay, Martin E. & Holloway, George F.
Partner: UNT Libraries Government Documents Department

Preliminary Free-Flight Investigation of the Effects of Rivets and Lap Joints on the Drag of Bodies at Zero Lift at Supersonic Mach Numbers to 2.1

Description: Memorandum presenting the effects of rivets and lap joints on the drag of bodies at zero lift at supersonic Mach numbers to 2.1 in free flight with rocket-propelled models. Four forward-facing lap joints 0.064 inch high, four similar lap joints facing rearward, and four double rows of 1/8-inch-diameter brazier head rivets were tested on a 5-inch-diameter body 56 inches long.
Date: August 20, 1952
Creator: Hopko, Russell N.
Partner: UNT Libraries Government Documents Department