Sheet Metal Structures - Guide

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  • Topic: Rivet, Aluminium alloy, Rivet gun
  • Pages : 34 (8326 words )
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  • Published : January 2, 2013
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SHEET METAL STRUCTURES

2-1D01
A well designed rivet joint will subject the rivets to

A compressive loads. B tension loads. C shear loads.
2-1. Answer C. JSAT 2-51 (AC65-15A)
Rivets hold pieces of aircraft skin together, and in a properly designed riveted joint, the rivets support shear loads only.

2-2D01
A main difference between Lockbolt/ Huckbolt tension and shear fasteners (other than their application) is in the

A method of installation.
B number of locking collar grooves.
C shape of the head.

2-3D01
Alloy 2117 rivets are heat treated

A to a temperature of 910 to 930 蚌 and quenched in
cold water.
B by the manufacturer and do not require heat treatment
before being driven.
C by the manufacturer but require reheat treatment
before being driven.

2-4D01
The general rule for finding the proper rivet diameter is

A three times the thickness of the thickest sheet.
B two times the rivet length.
C three times the thickness of the materials to be joined.

2-5D01
The shop head of a rivet should be

A one and one-half times the diameter of the rivet shank.
B one and one-half times the diameter of the manufactured head of the rivet. C one-half times the diameter of the rivet shank.

2-6D01
One of the main advantages of Hi-Lok type fasteners over earlier generations is that

A the squeezed on collar installation provides a more
secure, tighter fit.
B they can be removed and reused again.
C they can be installed with ordinary hand tools.
2-2. Answer B. JSAT 2-45
Huckbolts and Lockbolts are manufactured to the same Federal Standard. In each case, the tension-type has 4 to 5 locking grooves and the shear-type has 2.

2-3. Answer B. JSAT 2-38 (AC65-9A)
The 2117-T rivet, known as the field rivet, is used more than any other for riveting aluminum alloy structures. The field rivet is in wide demand because it is ready for use as received, and needs no further heat treating or annealing.

2-4. Answer A. JSAT 2-52 (AC65-15A)
As a general rule, the rivet diameter should be not less than three times the thickness of the thickest sheet being riveted.

2-5. Answer A. JSAT 2-53
A properly formed shop head is one-half the shank diameter high, its diameter is one-and-one-half times that of the shank, and it is concentric with the hole.

2-6. Answer C. JSAT 2-45
The hand tools used for installation of Hi-Loks are an open
end wrench and hex key (alien wrench).
2-2
Building Professional Experience

2-7D01
The markings on the head of a Dzus fastener identify the

A manufacturer and type of material.
B body type, head diameter, and type of material.
C body diameter, type of head, and length of the fastener.

2-8D01
The Dzus turnlock fastener consists of a stud, grommet, and receptacle. The stud length is measured in

A sixteenths of an inch.
B tenths of an inch.
C hundredths of an inch.
2-7. Answer C. JSAT 2-49 (AC65-9A)
When working with Dzus fasteners, it is worthwhile to know that the body diameter, length, and head type may be identified by the markings found on the head of the stud.

2-8. Answer C. JSAT 2-50 (AC65-9A)
The length of a Dzus fastener is measured in hundredths of an inch and is the distance from the head of the stud to the bottom of the spring hole.

2-9D01
The Dzus turnlock fastener consists of a stud, grommet, and receptacle. The stud diameter is measured in

A sixteenths of an inch. B hundredths of an inch. C tenths of an inch.

2-10D01
Threaded rivets (Rivnuts) are commonly used to

A join two or more pieces of sheet metal where shear
strength is desired.
B join two or more pieces of sheet metal where bearing
strength is desired.
C attach parts or components with screws to sheet
metal.
2-9. Answer A. JSAT 2-50 (AC65-9A)
The diameter of a Dzus fastener is always measured in sixteenths of an inch.

2-10. Answer C. JSAT 2-48...
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