Aircraft Operating Life and Durability

                                  Laboratory Work ¹5
             Influence of the Type of Rivets and the Number of Their Rows 
			             on The Durability of the Riveted Joints

          Student:           Group:
          Variant:1

          Individual tasks for laboratory work:
          Sigma_áðð01=134ÌÏà     Sigma_áðð02=95ÌÏà     d=4ìì  Â=25ìì
          Number of rivets rows: 1 è 3

              basic fatigue curves  parameters calculation results for 
                          plates with not filled hole
          |————————————————————————————————————————————————————————————|
          |               |               Rivet Type                   |
          |               |————————————————————————————————————————————|
          | N, cycle      |    ÎÑÒ1 34052-85    |     ÎÑÒ1 34040-79    |
          |               |—————————————————————|——————————————————————|
          |               |Gáðð0, ÌÏà | LgGáðð0 | Gáðð0, ÌÏà | LgGáðð0 |
          |———————————————|—————————————————————|——————————————————————|
          |   10000            343.0     2.5352       462.4     2.6650 |
          |   40000            257.4     2.4107       337.8     2.5286 |
          |  100000            213.0     2.3283       274.5     2.4385 |
          |  500000            152.7     2.1837       190.6     2.2802 |
          | 1000000            132.3     2.1214       162.9     2.2120 |
          |————————————————————————————————————————————————————————————|
                         Calculation result for -row and -row overlap joints 
                             with rivets ÎÑÒ1 34052-85 è ÎÑÒ1 34040-79
          |———————————————————————————————————————————————————————————————————————————————|
          | Calculation   |      -row joint               |         -row joint            |
          |               |———————————————————————————————|———————————————————————————————|
          |               | ÎÑÒ1 34052-85 | ÎÑÒ1 34040-79 | ÎÑÒ1 34052-85 | ÎÑÒ1 34040-79 |
          |———————————————|———————————————|———————————————|———————————————|———————————————|
          |Gáðð0, ÌÏà     |  134      95     134      95     134      95     134      95  |
          |LgGáðð0        | 2.1271  1.9777  2.1271  1.9777  2.1271  1.9777  2.1271  1.9777|
          |Fáð, ìì^2      |   50      50      50      50      50      50      50      50  |
          |P, äàÍ         |  670.0   475.0   670.0   475.0   670.0   475.0   670.0   475.0|
          |Êí1            |   0.90    0.90    0.90    0.90    1.03    1.03    1.03    1.03|
          |Ðñð, äàÍ       |  670.0   475.0   670.0   475.0   223.3   158.3   223.3   158.3|
          |Ðêý1, äàÍ      |  603.0   427.5   603.0   427.5   230.0   163.1   230.0   163.1|
          |Fñì, ìì^2      |    8       8       8       8       8       8       8       8  |
          |Gñì, ÌÏà       |  753.7   534.4   753.7   534.4   287.5   203.9   287.5   203.9|
          |Ðë, äàÍ        |   67.0    47.5    67.0    47.5   440.0   311.9   440.0   311.9|
          |Gë, ÌÏà        |   13.4     9.5    13.4     9.5    88.0    62.4    88.0    62.4|
          |Gè, ÌÏà        |  227.9   195.5   227.9   195.5   121.8    96.0   121.8    96.0|
          |N, öèêë        |  12300   31100   30800   73500   51600  167900  129900  384800|
          |LgN            | 4.0927  4.4930  4.4893  4.8667  4.7130  5.2251  5.1139  5.5853|
          |———————————————————————————————————————————————————————————————————————————————|

                  Fatigue life calculation results of the three-row
                     joints with rivets OST1 34040-79 using
                    experimental eaquation for the fatigue curve             
                   |———————————————————————————————————————————|                  
                   |Gáðð0, ÌÏà | LgGáðð0 | N, öèêë   | LgN     |                     
                   |———————————|—————————|———————————|—————————|                        
                   |   134      2.1271       49600      4.6955 |
                   |    95      2.1271      163200      5.2127 |
                   |———————————————————————————————————————————|