Membrane structure development direction

Membrane architecture represents a groundbreaking evolution in structural engineering, characterized by its innovative use of fabrics with exceptional properties or by being inflated through air pressure to achieve stability. Often reinforced with flexible steel cables or rigid frameworks, these structures provide both tension and rigidity, allowing them to span vast areas effectively. Since their emergence in the 1970s, membrane structures have found increasing applications in large-scale buildings like sports arenas, shopping complexes, exhibition halls, and transport hubs. Today, they stand as a prominent choice in structural design and an essential aspect of chemical fiber textiles. In recent years, China has also seen significant advancements in this field.

The U.S. Pavilion at the Osaka World Expo showcased an early example of an air-supported membrane structure. This quasi-elliptical building, measuring 140m x 83.5m, marked the world's first large-span membrane structure and utilized glass fiber fabric coated with polyvinyl chloride (PVC). As a pioneering modern architectural marvel, it symbolized the dawn of the membrane structure era. Since then, membrane architecture has experienced rapid global growth.

In terms of span, the "Silverdome" in Pontiac boasts dimensions of 234.9m x 183m and was among the first to incorporate PTFE-coated glass fiber fabric, similar to what we see in modern stadiums. Meanwhile, the suspended membrane structure at Jeddah Airport in Saudi Arabia covers an impressive 420,000 square meters, highlighting its potential for expansive coverage. Another notable advancement came in 1988 during the Seoul Olympics, where the Suo Duding system was introduced in the gymnasium and fencing hall, later gaining traction in other sports venues. The Millennium Dome exemplifies contemporary achievements in building technology and material science through its distinctive membrane design.

Superalloy Investment Casting

Super alloy castings refer to the production of components using superalloys—metal alloys designed to withstand high stresses, high temperatures, and often corrosive environments without losing their mechanical strength or stability. These materials typically include combinations of nickel, cobalt, chromium, and iron, and are known for their exceptional heat resistance, corrosion resistance, and strength at elevated temperatures.
Super alloy castings are crafted through processes like Investment Casting, which is ideal for achieving the complex shapes and high precision required in industries where superalloys are crucial. These industries often include aerospace, for turbine blades and jet engine parts; power generation, for boiler parts and gas turbine components; and the chemical industry, where equipment must resist corrosion by harsh chemicals at high temperatures.
These casting processes involve careful control of temperatures and material composition to ensure that the superalloys’ unique properties—such as resistance to thermal creep deformation, surface stability, and resistance to oxidation—are fully realized in the final product.

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