Emotive CAD

Product design can be a complex and iterative process where the knowledge, experience and skills of an engineer are articulated through the design tools. The reasoning given by the designer behind every action performed in a design activity is highly complex and comprises inferred information, explicit and tacit knowledge, emotive communication and transient exposures to the subject matter. Although CAD tools log the trail of a designed part to an acceptable extent they miss out the valuable information about external endeavour happening during the design process, for instance dialogues, rough sketches, notes, internal cognitive activity, emotions, mental workload etc. As an initiative to study the feasibility of capturing holistic contextual information for post task analysis, UbiITS framework had been implemented around the CAD activity. Multi-modal data such as cognitive measurements derived though psycho-physiological signals, eye-tracking, keyboard/mouse logging, document access sequence, task completion times, etc all captured in a synchronous manner provide a rich insight of the captured CAD process. Collectively analysing this data opened an unprecedented pathway to revisit and understand the design rationale and the tacit knowledge entrenched in a design process