## 3 Case Studies and Results
### Case Study 1: Jack Adapter of Heavy-Duty Prop
Then, thresholds of parameters that are characterizing each DFW rule are checked to the features identified in the feature recognition phase. Thus, explicit knowledge characterizing each DFW rule is checked with the feature identified in the feature recognition phase. Within the rule analysis phase, three design issues (non-validated DFW rules) were highlighted regarding the jack adapter. \begin{table}
\begin{tabular}{c c} \hline \hline
**Component Model** & **Features** \\ \hline ID: C001 & \\ Material: Carbon steel S235 JR & \\ Mass: 1,73 kg & \\ Volume: 640425,668 mm\({}^{3}\) & \\ Area: 269772,92 mm\({}^{2}\) & \\ \hline ID: C002 & \\ Material: Carbon steel S235 JR & \\ Mass: 0,97 kg & \\ Volume: 360294,957 mm\({}^{3}\) & \\ Area: 160737,86 mm\({}^{2}\) & \\ \hline ID: C003 & \\ Material: Carbon steel S235 JR & \\ Mass: 0,39 kg & \\ Volume: 144026,440 mm\({}^{3}\) & \\ Area: 75813,45 mm\({}^{2}\) & \\ \hline ID: C004 & \\ Material: Carbon steel S235 JR & \\ Mass: 1,13 kg & \\ Volume: 145579,537 mm\({}^{3}\) & \\ Area: 76034,60 mm\({}^{2}\) & \\ \hline ID: C005 & \\ Material: Carbon steel S235 JR & \\ Mass: 0,71 kg & \\ Volume: 91091,139 mm\({}^{3}\) & \\ Area: 62200,19 mm\({}^{2}\) & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Component features extracted by the 3D CAD model of the jack adapter. \begin{table}
\begin{tabular}{c l} \hline \hline
**Component Model** & \multicolumn{1}{c}{**Features**} \\ \hline ID: W001 & \multicolumn{1}{c}{Type of feature: _Weld beam 01\_Half sleeve_ vs. _Base plate and Half sleeve_ vs. _Top cross plate_} \\  & \multicolumn{1}{c}{Coordinates of the welded parts involved in feature in reference with origin:} \\  & \(\bullet\) & Half sleeves coordinates: [150;150;\(-\)137,50]; [-150;\(-\)137,50]; [150;\(-\)150;\(-\)137,50]; [-150;\(-\)137,50]; [-150;\(-\)137,50] (Connection with base plate) \\  & \(\bullet\) & Welding position (height): \(-\)137,50 (base plate) and \(-\)2.50 (top cross plate) \\  & \(\bullet\) & Welding position (diameter): external [68 mm] \\  & \(\bullet\) & Welding thickness: 3 mm \\  & \(\bullet\) & Welding length: 8 \(\times\) 187,84 mm \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Welding features (highlighted in orange) extracted by the 3D CAD model of the jack adapter. \begin{table}
\begin{tabular}{c l} \hline \hline
**Component Model** & \multicolumn{1}{c}{**Features**} \\ \hline ID: G001 & \multicolumn{1}{c}{Type of feature: _Sheet bend_} \\  & Coordinates of the feature in reference with origin: [127.77;0;0] (start point bend); [143,02;0;0] (end point bend) \\  & Volume: 145579,537 mm\({}^{3}\) \\  & Area: 76034,60 mm\({}^{2}\) \\  & FaceList: & \\ \(\bullet\) & Rectangular\_face\_01.01 \\  & \(\bullet\) & Rectangular\_face\_01.02 \\  & \(\bullet\) & Rectangular\_face\_01.03 \\  & \(\bullet\) & Rectangular\_face\_01.04 \\  & \(\bullet\) & Rectangular\_face\_01.05 \\  & \(\bullet\) & Rectangular\_face\_01.06 \\  & PMIList: & \\ \(\bullet\) & Specific roughness: NO \\ \(\bullet\) & Specific tolerance: NO \\ PropertyList: & \\ \(\bullet\) & Bend angle: 65,65\({}^{\circ}\) \\ \hline ID: G002 & \multicolumn{1}{c}{Type of feature: _Slot_} \\  & Coordinates of the feature in reference with origin: [136.89;0;0] \\  & Volume: 1553,097 mm\({}^{3}\) \\  & Area: 593,10 mm\({}^{2}\) \\  & FaceList: & \\ \(\bullet\) & Rectangular\_face\_02.01 \\  & \(\bullet\) & Rectangular\_face\_02.02 \\  & \(\bullet\) & Circular\_face\_02.01 \\  & PMIList: & \\ \(\bullet\) & Specific roughness: NO \\ \(\bullet\) & Specific tolerance: NO \\ PropertyList: & \\ \(\bullet\) & Slot length: 66 mm \\ \(\bullet\) & Slot width: 7 mm \\ \(\bullet\) & Slot depth: 4 mm \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Example of geometric features (highlighted in orange) extracted by the 3D CAD model of the C002 component of the jack adapter. The first issue is only the \"info\" rule type and refers to the use of specific shielding gas for the GMAW process. Indeed, this information is not connected with the geometry of the model but regards the materials and the process.