restrictions or limitations on behavior or performance; important because they Constraints: limit the size of the design space things a product or design are supposed to do or actions to perform; Function: ways of executing the functions or specific attribute solutions. Implementations or means: (Caution should be used when including implementation requirements that unnecessarily limit the possible solutions. It is common for stakeholders to identify the when describing the “how” need. However, there are often many other solution possibilities that would meet the design objective in a way that satisfied and was acceptable to the stakeholders when probed about those possibilities.) To illustrate how Customer Requirements can be consider an example given by developed, let’s Dym and Little (2004). They were asked by a company to a bottle to “design hold juice.” To learn more, they interviewed company representatives and developed the following requirements, which consist of objectives, constraints and functions. The following is a partial list of attributes the authors identified in the text. List 3.4 BEVERAGE CONTAINER Augmented Attributes List (partial list from text) Safe DIRECTLY IMPORTANT Perceived as Safe Appeals to Parents on Safe Chemically Inert Constraint Environmentally Benign Safe Environmentally Benign Appeals to Parents Preserves taste Promotes Sales Easy for Kids to Use Appeals to Parents Resists Range of Temperatures Durable for Shipment Resists Forces and Shocks Durable for Shipment Easy to Distribute Promote Sales Durable for Shipment Easy to Distribute Easy to Open Easy for Kids to Use Hard to Spill Easy for Kids to Use Appeals to Parents Promotes Sales on Preserves Taste Chemically Inert Constraint on Safe No Sharp Edges Constraint Promotes Sales DIRECTLY IMPORTANT Source: Dym and Little, 2004, p. 57. Please note that the constraints are italicized. Once the requirements (objectives, constraints, and functions) are identified, it is helpful to organize them in a hierarchical list or tree. The following is a combined objectives/constraint tree for the desired the constraints are italicized. “juice bottle.” Again, SAFE BEVERAGE CONTAINER Safe Environmentally benign No sharp edges Chemically inert Promotes Sales Easy to distribute Durable for shipment Resists forces, shocks
Constraints: restrictions or limitations on behavior or performance; important because they limit the size of the design space Function: things a product or design are supposed to do or actions to perform; Implementations or means: ways of executing the functions or specific attribute solutions. (Caution should be used when including implementation requirements that unnecessarily limit the possible solutions. It is common for stakeholders to identify the “how” when describing the need. However, there are often many other solution possibilities that would meet the design objective in a way that satisfied and was acceptable to the stakeholders when probed about those possibilities.) To illustrate how Customer Requirements can be developed, let’s consider an example given by Dym and Little (2004). They were asked by a company to “design a bottle to hold juice.” To learn more, they interviewed company representatives and developed the following requirements, which consist of objectives, constraints and functions. The following is a partial list of attributes the authors identified in the text. List 3.4 BEVERAGE CONTAINER Augmented Attributes List (partial list from text) Safe DIRECTLY IMPORTANT Perceived as Safe Appeals to Parents Chemically Inert Constraint on Safe Environmentally Benign Safe Environmentally Benign Appeals to Parents Preserves taste Promotes Sales Easy for Kids to Use Appeals to Parents Resists Range of Temperatures Durable for Shipment Resists Forces and Shocks Durable for Shipment Easy to Distribute Promote Sales Durable for Shipment Easy to Distribute Easy to Open Easy for Kids to Use Hard to Spill Easy for Kids to Use Appeals to Parents Promotes Sales Chemically Inert Constraint on Preserves Taste No Sharp Edges Constraint on Safe Promotes Sales DIRECTLY IMPORTANT Source: Dym and Little, 2004, p. 57. Please note that the constraints are italicized. Once the requirements (objectives, constraints, and functions) are identified, it is helpful to organize them in a hierarchical list or tree. The following is a combined objectives/constraint tree for the desired “juice bottle.” Again, the constraints are italicized. SAFE BEVERAGE CONTAINER Safe Environmentally benign No sharp edges Chemically inert Promotes Sales Easy to distribute Durable for shipment Resists forces, shocks
EPICS_Design_Process.docx