Conception pour le désassemblage (DfD)

Parametric modeling is a CAD paradigm where designs are defined by parameters and constraints rather than just geometric shapes. Dimensions and relationships between features (e.g., parallelism, tangency) are stored as parameters. Modifying a parameter value automatically updates the entire model, maintaining the defined constraints. This approach facilitates design iteration, automation, and the creation of design families.

B2B business models are often categorized as either vertical or horizontal. A vertical B2B model focuses on a single industry or 'vertical,' providing specialized products and services tailored to that sector's unique needs (e.g., software for dentists). In contrast, a horizontal B2B model offers a product or service that is applicable across multiple industries (e.g., accounting software or office supplies).

LCA system boundaries define which life cycle stages are included in the assessment. A "cradle-to-grave" analysis covers the entire product life, from raw material extraction through manufacturing, use, and final disposal. In contrast, a "cradle-to-gate" assessment is a partial LCA that ends when the product leaves the factory gate, excluding the use and disposal phases.

A set of nine foundational principles for sustainable design, developed by William McDonough and Michael Braungart. They advocate for the rights of humanity and nature to coexist, recognize interdependence, respect relationships between spirit and matter, accept responsibility for design consequences, create safe objects of long-term value, eliminate waste, rely on natural energy flows, and understand the limitations of design.

Viral marketing describes any marketing strategy that encourages individuals to pass on a marketing message to others, creating the potential for exponential growth in the message's exposure and influence. Like viruses, such strategies take advantage of rapid multiplication to explode the message from person to person. It is a form of amplified word-of-mouth, often facilitated by the internet.

A Carbon Nanotube Field-Effect Transistor (CNTFET) utilizes a single carbon nanotube (CNT) or an array of CNTs as the channel material instead of bulk silicon. Depending on its chirality (the arrangement of its graphene lattice), a CNT can be either metallic or semiconducting, making it a versatile building block for nanoelectronic devices with superior performance potential.

The Juran Trilogy, developed by Dr. Joseph M. Juran, is a foundational quality management approach consisting of three interconnected processes: Quality Planning, Quality Control, and Quality Improvement. This framework provides a structured way for organizations to manage for quality. It emphasizes that quality does not happen by accident; it must be planned and managed systematically.

ISO 9001 is the world's most recognized standard for Quality Management Systems (QMS). It provides a framework and a set of principles that ensure a common-sense approach to the management of an organization to consistently satisfy customers and other stakeholders. It is based on seven quality management principles, including a strong customer focus and a process-based approach.

Life-Cycle Assessment (LCA) is a systematic methodology for evaluating the environmental impacts associated with all stages of a product's life. This "cradle-to-grave" or "cradle-to-cradle" analysis considers raw material extraction, processing, manufacturing, distribution, use, repair, maintenance, and final disposal or recycling. It quantifies inputs like energy and raw materials and outputs like emissions to air, water, and soil.

Solid-state batteries replace the liquid or polymer gel electrolyte of conventional batteries with a solid, ion-conducting material, such as a ceramic or solid polymer. This design aims to improve safety by eliminating flammable liquid electrolytes and to increase energy density and lifespan by enabling the use of high-capacity anodes, particularly pure lithium metal.

Design for the Environment (DfE), also known as ecodesign, is a proactive approach to product and process development that minimizes environmental and human health impacts across the entire product life cycle. It integrates environmental considerations into the earliest design stages, alongside traditional factors like cost and performance, to prevent pollution and conserve resources from the outset.

The three pillars of sustainability, also known as the triple bottom line, is a framework that posits true sustainability requires balancing three main dimensions: environmental, social, and economic. Environmental sustainability focuses on preserving natural resources and ecosystems. Social sustainability addresses equity, community well-being, and human rights. Economic sustainability ensures long-term financial viability without compromising the other two pillars.

The functional unit is a critical concept in LCA that defines the quantified performance of a product system for use as a reference unit. It ensures that comparisons between different systems are made on a fair and equivalent basis. For example, when comparing paint, the functional unit might be 'to protect 1 square meter of wall for 10 years'.

ISO 14644-1 classifies cleanroom air cleanliness by the maximum allowable concentration of airborne particles. The classification, from ISO 1 to ISO 9, is determined by the formula [latex]C_N = 10^N \times (\frac{0.1}{D})^{2.08}[/latex], where [latex]C_N[/latex] is the max concentration of particles/m³, N is the ISO class number, and D is the particle size in µm.