Enhanced analytical model for planning the verification, validation & testing process

System VVT (verification, validation, and testing) are three tasks of System Engineering that focus on ensuring that systems are designed and delivered to meet customer and engineering requirements in the best way possible. Most organizations use sub-optimal VVT processes and methods. Moreover, in many projects, the project manager should anticipate unexpected outcomes during the VVT process, for example, Cost to complete, or Time to complete exceed Cost or Time predictions prior to commencement of the VVT process. The literature include very little research for associating VVT methods to VVT activities and does not offer an effective recovery procedure to suit unforeseen events. In this paper, we present enhanced analytical model that not only structures the decision process but also outputs the optimal VVT methods given Cost, Risk and Time constraints to suit unpredictable outcomes during the VVT process. The use of the enhanced model is demonstrated on a sample problem incorporating some unexpected outcomes during the VVT process.