Read "Going to Extremes: Meeting the Emerging Demand for Durable Polymer Matrix Composites" at NAP.edu (2024)

example, that experimentalists should not measure short-beam shear strength simply because they have always done so and there happens to be a test standard for it. A database should include properties because they support promising models or because they can be used to validate (or repudiate) promising models. Making use exclusively (or nearly exclusively) of existing ASTM or industry standards without considering their relevance is a recipe for disaster.

Data as defined today are expensive to gather, difficult to harmonize, and, many times, irrelevant to a specific model. Furthermore, data tend to become outdated and must be refreshed and improved. This calls for an overhaul of the way we collect, use, tally, and communicate data. A word has been recently coined that encompasses these concepts: informatics.

INFORMATICS AS A DISCIPLINE

Informatics is a relatively new field that is fast impacting the other fields it touches. A working definition of the discipline is the research, development, or application of computational tools and approaches for expanding the use of data, including those required to acquire, store, organize, archive, analyze, or visualize the data. It is important to note, however, that the field did not appear in academia fully formed but took many years to overcome academic inertia and gain the acceptance of researchers in the disciplines involved.

See Also
Database

Biomedical Informatics

Biomedical informatics applies computer science, decision science, cognitive science, and organizational theory to the management of biological and medical information. The biological community did not universally agree on the importance of developing information resources and tools, even those that are today some of the most visible—GenBank, model organism databases, and the Human Genome Project. In retrospect, however, each of these efforts has revolutionized the accessibility and applicability of data and analysis tools to biologists, and many say these resources have created new perspectives for how biological research is done and interpreted. Extending these centralized data and analysis resource concepts to PMCs would enable researchers to make connections and draw conclusions about PMC mechanism-property relations that cannot be made with the current decentralized state of data, analysis, and algorithms in the field.

Physicians, clinical researchers, and biologists have long needed to organize and sift through large quantities of data. Since the 1970s, biomedical professionals have joined with computer and information scientists to find new ways of dealing with their data, and the field of biomedical informatics, particularly the subfield of bioinformatics, has exploded in the last 10 years. Biomedical informatics research has been able to capture significant amounts of funding, primarily from the National Institutes of Health, and there are now biomedical informatics laboratories at every institution doing major biological research. According to gradschools.com, 62 schools in the United States and another 29 outside of the United States currently have medical informatics or bioinformatics M.S. or Ph.D. programs.

The emergence of this academic discipline has opened up new areas of research, drawing in scientists who wish to make new discoveries by mining existing data. Biomedical informaticists have made basic research discoveries by creating and then applying computational tools to find subtle patterns in vast amounts of data that were previously inaccessible to biologists. In one example, computational biologists were able to analyze the genome of an intriguing and poorly understood microorganism to find a DNA sequence—unrelated to that of any other known organism—that was critical for understanding how the microorganism, an enzyme, replicated its DNA. This enzyme has been exploited in the development of the polymerase chain reaction and resulted in a Nobel prize for its achiever.

As part of their research, bioinformaticists are constantly developing new databases and computational tools and publishing them on the Internet, providing a tremendous service for biological scientists. In general, informatics researchers generate algorithms to extract valuable information from massive quantities of raw data. When the informaticists provide these tools on the Internet, the larger community of biological scientists can use them for applications specific to their research, such as comparing gene sequences of various organisms to determine their evolutionary relationships.

Read "Going to Extremes: Meeting the Emerging Demand for Durable Polymer Matrix Composites" at NAP.edu (2024)

FAQs

What are the disadvantages of polymer matrix composites? ›

Some disadvantages of thermoplastic PMCs are high viscosities, high processing temperatures, and the need to perform fiber or particle-surface treatments. PMCs are much easier to fabricate than metal-matrix, carbon-matrix, and ceramic-matrix composites, whether the polymer is a thermoset or a thermoplastic.

What are the environmental effects in polymer matrix composites? ›

The durability of FRP composites is influenced by factors like moisture absorption, chemical reactions, and microstructural changes, leading to a decline in mechanical strength over time. Moisture and humidity significantly impact FRP composite properties, causing reduced strength and interlayer shear strength.

What are the advantages of polymer matrix composites? ›

PMCs are designed to transfer loads between fibers of a matrix. Some of the advantages with PMCs include their light weight, high resistance to abrasion and corrosion, and high stiffness and strength along the direction of their reinforcements.

What type of reinforcement material creates a polymer matrix composite PMC that is tougher and puncture resistant? ›

In the last decade, synthetic fiber, as a reinforcing specialist, has been mainly used in polymer matrix composites (PMC's) to provide lightweight materials with improved stiffness, modulus, and strength. The significant feature of PMC's is their reinforcement.

What is the big disadvantage of composites? ›

1.3.2 Disadvantages ofComposites

Composites are more brittle than wrought metals and thus are more easily damaged. Cast metals also tend to be brittle. 2. Repair introduces new problems, for the following reasons: Materials require refrigerated transport and storage and have limited shelf lives.

What are 3 disadvantages of composite materials? ›

Disadvantages of Composite Materials
  • Manufacturing composites can be expensive.
  • Repairs may require specialised techniques.
  • Layers can separate under stress.
  • Some composites degrade in sunlight.
  • Some composites are not fire-resistant.
  • Disposal can be challenging.
  • Recycling composites can be difficult.
Oct 11, 2023

What are the negative effects of polymers in our environment? ›

Synthetic polymers mainly obtained from petroleum are a major environmental concern. The drilling of petroleum can cause major disruptions to wildlands and habitats, along with potential pollution (such as leakage of toxic substances) from active wells and processing plants.

What are 3 negative effects that polymers have on the environment? ›

Petroleum-based polymers are linked to a variety of health and environmental issues throughout their life cycle, such as pollution, greenhouse gas emissions, persistence in marine and terrestrial habitats, etc.

What are the advantages and disadvantages of polymer matrix composites? ›

Advantages and disadvantages of polymer composites
  • low specific weight;
  • high specific module;
  • high corrosion resistance;
  • flexibility and freedom of design forms.

How polymer matrix composites are useful in modern days? ›

Several polymer matrix composites (PMCs) derived from collagen, chitin, polyether ether ketone (PEEK), and other biopolymers are presently used in the additive manufacturing industry for the development of bioinspired materials. They are mainly used for 3D printing human body parts.

Why do we need polymer composites? ›

Polymer composites have been found to have excellent friction and wear performance after being modified with functional fillers and reinforcements. This advantage makes them flexible in many industrial applications.

What are the two types of polymer matrix composites? ›

Polymer matrix composites are often divided into two categories: reinforced plastics, and “ad- vanced composites. ” The distinction is based on the level of mechanical properties (usually strength and stiffness); however, there is no unambiguous line separating the two.

Can you cast a polymer matrix composite? ›

Cast polymer composite materials are used for fabricating products that are reliable and meet almost all design criteria, some of the designs solutions are presented in the paper. Modern composites become competitors due to the possibility of modeling different design products.

What is the difference between PMC and CMC? ›

The CMC are recognized with their higher strength, higher hardness, higher application temperature, their chemical inertness, and their low densities in most high temperature applications; CMC are come first because PMC and MMC cannot be utilized at such high temperatures [4].

What are the 4 main types of FRP? ›

The FRP systems are divided into carbon (CFRP), glass (GFRP), aramid (AFRP), and basalt (BFRP) systems [Triantafyllou 2004]. Carbon fibre reinforced polymers (CFRP). Carbon fibre reinforced polymers have the best mechanical properties amongst other FRP composites, and have the more favourable price to properties ratio.

What is a disadvantage of using polymer materials? ›

Most synthetic polymers have many disadvantages including toxicity, poor biocompatibility, and high cost of the production process [37] .

What are the challenges in polymer composites? ›

Composites are tough, durable and inhom*ogeneous. For these reasons they are difficult to recycle and the commercialization of recycled waste materials is challenging.

What are the advantages and disadvantages of FRP composites? ›

Benefits. Control costs: FRP and GRP products are more sustainable than alternatives such as wood, aluminum, iron or steel. They last longer and require little to no maintenance. Non conductive: Pultruded products can be non-conductive, resistant to weather elements, provide insulation, and are corrosion resistant.

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