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• Specimen has rectangular in cross-section

• Length x Width x Depth - 200 mm x 75 mm x Thickness of Sandwich Construction

• Make sure to test at least five specimens per test condition unless you are confident that the results obtained are valid through the use of fewer specimens.

•  Equipment: ball-interfaced and anvil interface micrometer, deflectometer, conditioning chamber, environmental test chamber are recommended but not required.

• Apparatus: The machine will have a stationary and movable head, the machine should be able to indicate the total force being carried by the test specimen, it will either be a 3- or 4-point bend test. Below is what they used

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• Sampling—Test at least five specimens per test condition unless valid results can be gained through the use of fewer specimens

• The test specimen will have a constant rectangular cross section with a specimen width variation of no more than 1% and a specimen thickness variation of no more than 2%, the tables below give more detail.

• Below is an equation to get the recommended test thickness

• Equipment required:

  • Micrometers/calipers

  • Strain-Indicating Device

  • Bonded Resistance Strain Gauges

  • Emery cloth

  • Special Alignment Jig (pictured below)

• Compression Testing Fixture(pictured below are schematics and the actual fixture)

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• Apparatus:

  • There will be a force indicator

  • The machine will have two loading heads. 

^^^I don’t exactly know what this means (interpret pls)

• The drive mechanism will be able to give a controlled displacement rate with respect to the stationary head. 

• If the atmosphere conditions suck use a conditioning chamber and an environmental test chamber.

• If the material is super stiff use an extensometer. 

• Will be the same as the above standard along with the following:

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•   The above is the diagram of the geometry

• Test at least 10 test specimens for each adhesive.

• Discard specimens that give out of line test results due to obvious flaws and then retest.

• Will conform to the following geometry:

  

• At least 20 specimens shall be tested, representing at least four different joints

• Use these if you can:

• Test 10 test specimens for each adhesive

• Substrates—Fiber reinforced plastic (FRP) as specified, with metal composition (heat treat, temper, and condition) and roughness as specified when bonding FRP to metal. (I don’t know what this means)

• Cut fiber-reinforced plastic parts into flat coupons 1 by 4 in. (25.4 by 100 mm) at a nominal thickness of 0.1 in. (2.5 mm). In the case of FRP-to-metal bonding, use metal with a nominal thickness of 0.06 in. (1.5 mm). It is recommended that a diamond tip water-cooled saw blade be used, or a cutting method capable of producing sharp cut edges.

• Joint Geometry—Control joint geometry by appropriate fixturing, using glass beads or other suitable means to control a 0.03-in. (0.76-mm) adhesive bondline thickness. Use the minimum number of glass beads in the glue line needed to hold bondline thickness. Fixturing pressure is allowed. Lap shear overlap will be 1 by 1 in. (25.4 by 25.4 mm) See Figure 1 below.

• Prepare a minimum of 5 lap shear samples in each case and test.