WBS refers to a deliverable-oriented hierarchical decomposition of the work performed by the project team to achieve project goals and complete specified deliverables.

The WBS details the deliverables and scope of the project, that is, the specific content of the project, but does not describe the process or schedule. It does not define how or when the deliverables will be produced, but is specifically limited to describing and breaking down the project results and scope.

The WBS method can decompose complex tasks into multiple simple tasks, decompose projects into manageable activities, and serve as the basis for project planning and tracking.

Facilitate effective control of projects

Facilitate communication among stakeholders

Basic framework for reporting project status

Structural design tools that clarify the interconnections between project work

The 100% principle is the core feature of WBS. It reflects that WBS includes all work content defined by project services and all deliverables, including internal, external and intermediate tasks, as well as project management.

The 100% principle is one of the most important principles guiding the preparation, decomposition and evaluation of WBS and applies to all levels of WBS: the sum of all work on the "child" level should be 100% exactly equal to the work on the "parent" level

The WBS should not include any work outside the scope of the project, i.e. it cannot exceed 100% of the scope of work

The 100% principle also applies to the activity level

In each work package, the sum of the work represented by activities should be 100% equal to all the work required to complete this work package

Hierarchy chart, outline

Tabular structure

Task Hierarchy Principle

minimum time principle

The principle of assigning responsibility to the individual and the principle of risk decomposition

step-by-step segmentation principle

risk decomposition principle

Teamwork Principles

analogy method

top-down approach

bottom-up approach

Brainstorming

APQP is an important requirement in the technical specification IATF16949 of the International Advanced Automotive Enterprise Group

The content of APQP includes how to control product design and development to ensure product quality meets requirements, improve efficiency and reduce costs.

APQP is a structured method to ensure product quality meets requirements and enhance customer satisfaction.

APQP is an orderly arrangement of the four stages of a typical PDCA management cycle, which runs through the entire life cycle of the product.

Plan and determine project phases - from product concept to project approval phase: understanding customer needs and expectations to plan and decide on the projects to be developed and the phases of the project development plan

Product design and development stage - from project approval to sample completion stage: all product drawings and design documents need to be completed, and through sample trial production and testing, the correctness of the product drawings and design documents, product applicability and reliability, product The extent to which customer requirements are met

Process design and development stage - from prototype completion to pilot production stage: develop an effective manufacturing system and ensure that this manufacturing system meets customer requirements, needs and expectations

Product and process qualification stage - from sample completion to trial production stage: verify whether the control plan and process flow chart are followed during the trial production run, whether the product meets customer requirements, and investigate and resolve relevant concerns before formal production run

Feedback, assessment and corrective action stage - from trial production to formal mass production stage: based on information feedback obtained from the production process, product use, and delivery services, improve deficiencies in product quality planning and provide customer satisfaction

Determine target customers

Investigate customer requirements and determine the importance of customer requirements

Determine the characteristics that the final product should have based on customer requirements

Analyze the correlation between each feature of the product and meeting customer needs

Evaluate the market competitiveness of the product, and accordingly understand the product's advantages, disadvantages and areas for improvement in the market, and ask customers to evaluate the degree to which the company's products and competitors' products meet their requirements, and determine the direction for improvement of each product's characteristics.

Select product characteristics that need improvement and determine their target values

Product planning stage: Transform customer needs into quality characteristics through the product planning matrix, and determine the target values ​​of each quality characteristic based on the results of customer competitiveness assessment and technology competitiveness assessment.

Part configuration stage: Use the quality characteristics defined in the previous stage to select the best solution from multiple design solutions and convert it into key part features through the part configuration matrix

Process design stage: Through the process design matrix, determine the key process parameters that must be guaranteed to achieve key quality characteristics and part characteristics.

Production control stage: Convert key part characteristics and process parameters into specific production control methods or standards through the production control matrix

Experimental design is a sequential process in which a series of experiments are designed in advance for the purpose of in-depth understanding of the inherent operating characteristics of the analysis object, and valuable information is extracted through the analysis of the test results.

Factor (influence factor): Factors that affect the output

filter

optimization

Robustness: Find a reasonable configuration of controllable factors that minimizes the impact of uncontrollable factors on the response value

Specified conditions: refers to the stress conditions, environmental conditions, storage conditions, operating techniques, maintenance conditions, etc. when using the product.

Specified time: refers to the working time of the product

Specified functions: refers to the technical indicators that the product should have

Reliability design means to meet the qualitative and quantitative requirements of reliability, based on reliability theories and methods, combined with the design experience and lessons of previous products, and using mature reliability design technology to make the design of product parts and complete machines meet or achieve Reliability Index Process

Reliability design is the most important component of reliability engineering and the basic measure to improve the inherent reliability level of products.

Key Process Stages of Reliability Design

Equal distribution method

AGREE allocation method

ARINC allocation method

score allocation method