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f
                                          h                                                                   20
                                          −     2
                                           b          f      2
                                 R        h          h

                                                                                L
                                 φ

                              R               L                           4  φ       !  4



                                                                                +            0

                                                                          2          !  2

                                                 b     2                     φ
                                                h
                                                                                1−
                         Thickness

                                                                                =



                                         )                                      cosφ
                                         φ                          or, after using a Taylor’s series expansion, for small φ  Prof. Ramesh Singh, Notes by Dr.   Singh/ Dr. Colton

                                         cos       from the definition  of a circular segment





                                         1−                                                   2  φ


                                         (                                                       ⋅
                                         ⋅                                                       R
                                         2R                                                      +




                                         +                                                        f
                                                                                                 h

                                          f
                                         h                                                       =

                                         =                                                       h


                                         h
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