Proposed productivity theory for industrial engineering collected all achievements in analytical and practical experience in formulating the physical productivity for different manufacturing systems with simple and complex designs. Productivity theory for industrial engineering discovers laws and reasonable links for creating manufacturing machines and systems. It is necessary to point out that this productivity theory is universal and can be applied to any type of industry, i.e. manufacturing, textile, transport, chemical, etc. The presented productivity theory maximally avoids simplifications in analysis and mathematical models of productivity rate for different designs and structures of the manufacturing systems. Renovated and corrected productivity theory enables accurate solving of the problems of designing the machines and systems based on innovative technologies with high manufacturing productivity rates.
Productivity theory enables defining optimal balancing technological processes, optimal machining regimes, and optimal structures of manufacturing machines and systems by the criterion of necessary or maximal productivity rate and sustainable improvement of the production process. The fundamentals of productivity theory for industrial engineering are based on several engineering and mathematical theories that include theories of technological processes, machine designs, reliability, probability, optimizations, engineering management, economics, and others.
The combined application of these theories enables the development of a holistic productivity theory for industrial engineering. Productivity theory considers all factors that influence the output and design of manufacturing machines and systems. The first factor is the technological process that is the essence of design for any manufacturing machine and system, which defines the limits of the productivity rate and time spent for the production process. Other theories applied to the design of manufacturing machines
and systems enable a decrease in the non-productive or auxiliary and idle times of production processes. The objective of productivity theory is to provide the methods and mathematical models for studying the regularities and reasonable links in the design of manufacturing machines and systems with optimal structures and maximal productivity rate. In addition, this theory enables demonstrating the productivity losses and their reason in real production environments. Solutions to these problems are making the progress in developing industrial machines based on the application of innovative technological processes that enable an increase in their productivity rate. Such universality of productivity theory for solutions of productivity problems for manufacturing machines and systems can be used in complex and purposeful approaches for sustainable improvement of the production process. Hence, the perspective designs of manufacturing machines and systems request from engineers and technologists the wide
knowledge and prospects and understanding the essence and regularities in the development of industrial engineering. Productivity theory for industrial engineering can be a core course for manufacturing and industrial engineering departments and faculties of universities and will be a deskbook for practitioners and manufacturers.