Quelltext der Seite Material--first taxonomies

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'''On the arrangement/array and structuring of material and materiality in an artistic context'''
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'''Creating a system where to find material, organizing and listing differences of material without choosing a setting of single "classifications"'''

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comment 1:  
not to be understood as complete lists, more of a practical approach from different angles.<br>
comment 2:
these classifications are not exclusive to each other and can be linked or crosslinked.<br>
comment 3:
classifications as groups of materials, contextualized rather than singled out or hierarchized <br>
comment 4:
classifications as titles and orientations, to be continued...<br>
comment 5: groupings as a meshwork of nodes of contact <br>
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=====Different approaches to classifications=====
{| class="wikitable sortable"
|-
| practical || artistic || production related / industrial || functional || semantic || sensual || contextualized || processual || ontological || contextualized || historical || spiritual || embodied || aesthetic || experimental || ...
|}
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=====Material families=====
classified according to raw material and resources, production related / industrial
{| class="wikitable"
|-
| paper || wood || metal || synthetics || rubber || stone/minerals || composites || organic || smart || glass || polymers || ceramics || gas  || foam ||...
|}
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=====Material features=====
classified according to properties and functionalities
{| class="wikitable"
|-
| reacting || conductive || reusable / recyclable || moldable / shapeable || adhesive / resolvent || resilient
|-
|digital || immaterial || programmeable || oriented on other sensory reception || phenomenological ||...
|}
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=====Material contextualisation=====
classified based on a multidisciplinary approach, distinctions made by highlighting single disciplines (exMedia)<br>
{| class="wikitable"
|-
| informatics || sound || design || architecture || 3D / animation / VR / AR || film/ games || theory || bio-art || human-animal studies||  ...
|}

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=====Fictional taxonomy, example one: Borges=====
Jorge Luis Borges "Emporio celestial de conocimientos benévolos", <br>
approx. 1942, a fictitious taxonomy of animals, a "celestial emporium of benevolent knowledge":<br>
(a)  belonging to the Emperor<br>
(b)  embalmed<br>
(c)  trained<br>
(d)  piglets<br>
(e)  sirens<br>
(f)  fabulous<br>
(g)  stray dogs<br>
(h)  included in this classification<br>
(i)  trembling like crazy<br>
(j)  innumerables<br>
(k)  drawn with a very fine camelhair brush<br>
(l)  et cetera<br>
(m)  just broke the vase<br>
(n)  from a distance look like flies<br>

see also https://www.crockford.com/wilkins.html
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==Traditional Material Classifications==
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====Material Science Classifications====
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'''Core understanding of the basic internal structure of materials. Hierachical'''<br><br>
''why one material is differentiated from another'' <br><br>
{| class="wikitable"
|-
| 1. Level || bonding forces between individual atoms
|-
| 2. Level || the way these bonding forces produce different types of aggregation patterns between atoms to form various molecular and crystalline solid structures 
|-
| 3. Level || These larger aggregation patterns can further be differentiated by how their molecular structures branch or link or, in crystalline solids, by different types of unit cell and related spatial lattice structures such as face-centered or body-centere. 
|-
| 4. Level || broadly descriptive categories such as ceramics, metals or polymers 
|}

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====Engineering Classifications====
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'''Essentially descriptive but focuses on the performance characteristics of materials. Distinguish between the fundamental problem-solving characteristics. Mapping (mix and match properties and attributes).''' <br><br>
''how a material performs'' <br><br>
{| class="wikitable"
|-
| STATE || solid, liquid, gas 
|-
| STRUCTURE || amorphous, crystalline
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| ORIGIN || Natural, synthelic  
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| COMPOSITION || organic, inorganic, alloy
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| PROCESSING || cast, hardened, rolled
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| PROPERTY || emissivity, conductivity  
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| ENVIRONMENT || corrosive, underwater 
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| APPLICATION || adhesive, painl, fuel 
|}

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====Architectural Classifications====
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'''Architectural building codes and standards, for example, often supersede performance criterla in an attempt to simplifythe selection process and remove liability for performance failures. For many uses codes and standards often explicitly or implicitly identify acceptable materials, leaving the architect only to select between brands. As a result, architectural classifications tend to be more nominative - simply listing materials and uses in accordance with standard building requirements.''' <br><br>
''what a material is and where it is used'' <br><br>

Practical templates for communication between architects,contractors, fabricators and suppliers. After the preliminary design of a building is completed and approved, architects prepare construction documents that serve as the 'instructions' for the construction of the building. A textual documentdefines each building element on the design drawings and specifies the material or component. This document, rather than providing guidelines, instead serves as a binding contract that construction professionals and contractors must follow.
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Examples from [https://en.wikipedia.org/wiki/50_Divisions The CSI Master Format]:

{| class="wikitable"

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| Division 03 || Concrete
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| Division 04 || Mansory
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| Division 05 || Metals
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| Division 06 || Wood, Plastics, and Composites
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| Division 07|| Thermal and Moisture Protection
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| Division 08 || Openings
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| Division 09 || Finishes
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| Division 12 || Furnishings
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| Division 20 || Mechanical Support
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| Division 21 || Fire Suppression
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| Division 23 || Heating Ventilating and Air Conditioning
|-
| Division 26 || Electrical
|-
| Division 31 || Earthwork
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| Division 40 || Process Interconnections
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| Division 41 || Material Processing and Handling Equipment
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| Division 44 || Pollution Control Equipment
|}

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====Alternative Material Classifications====
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In the design fields, a host of different loose categorizations are used, many of which are particular (and perhaps idiosyncratic) to individual fields.
Many are quite qualitative and readily mix traditional approaches. ln many design fields the material is chosen long before performance criteria are defined and as such the process tends to be artifact-driven. <br><br>
Example: <br>
Material ConneXion<br>
The materials are organized similarly to the broad composition categories that sit at the top of the material science classification system, but are without the inductive lower layers that serve to explain thematerial. 
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The eight broad categories:

{| class="wikitable"
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| polymers || glass|| ceramics || carbon-based || cement-based || metals || natural materials || natural material derivatives
|}

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== Smart Material Classifications  ==
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Traditional engineering approach the material is understood as an array of physical behaviors, as a singular static thing, an artifact. Considering smart materials as fixed artifacts is unsatisfactory as this neglects their contingency on their environment (their properties respond to and vary with external stimuli).<br><br>

'''multi-layered classification'''<br><br>

one layer characterizing thematerial according to its physical behavior (what it does) <br>

other layer characterizing the material according to ist phenomenological behavior (the results of the physicalbehavior).<br>
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Also must address questions  about how smart materials relate to the world of intelligent devices and environments.
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'''Characteristics of smart materials and systems''' <br>
{| class="wikitable"
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| Immediacy|| respond in real time
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| Transiency|| respond to more than one environmental state
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| Self-actuation|| intelligence is internal to rather than external to the 'material'.
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| Selectivity|| response is discrete and predictable
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| Directness|| response is local to the 'activating' event
|}
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'''Smart Material Properties'''

{| class="wikitable"
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| chemical|| mechanical|| electrical|| magnetic|| thermal
|}

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'''lnput energy'''

{| class="wikitable"
|-
| electrical|| chemical|| thermal|| mechanical || radiative 
|}

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smart material changes are reversible: when the energy input is removed, the material reverts back to its original properties.
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==== Typ 1 Smart Material ====
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'''Undergo changes in one or more of their propertiesin direct response to a change in the external Stimuli associated with the environment surrounding the material. Changes are direct and reversible.''' <br><br>
===== Thermochromie =====
an input of thermal energy (heat) to the material alters its molecular structure. The new molecular structure has a different spectral reflectivity than does the original structure; as a result, the material's 'color' - its reflected radiation in the visible range of the electromagnetic spectrum - changes.
===== Magnetorheological =====
the application of a magnetic field (or for electrorheological - an electrical field) causes a change in micro-structural orientation, resulting in a change in viscosity of the fluid. 
===== Thermotropic =====
an input of thermal energy (or radiation for a phototropic, electricity for electrotropic and so on) to the material alters its micro-structure through a phase change. In a different phase, most materials demonstrate different properties, including conductivity, transmissivity, volumetric expansion, and solubility.
===== Shape Memory =====
an input of thermal energy (which can also be produced through resistance to an electrical current) alters the microstructure through a crystalline phase change. This change enables multiple shapes in relationship to the environmental stimulus.

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==== Typ 2 Smart Material ====
'''Transform energy from one form to an output energy in another form. Changes are direct and reversible.'''
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''The use of the term 'material' here can be slightly misleading.Many of the 'materials' in this class are actually made up of several more basic materials that are constituted in a way to provide a particular type of function. A thermoelectric, for example, actually consists of multiple layers of different Materials. The resulting assembly is perhaps better described as a simple device. The term 'material', however, has still come to be associated with these devices - largely because of the way they are conceptually thought about and used. Application-oriented thinking thus drives use of the term 'material' here.''
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===== Photoluminescents =====
an input of radiation energy from the ultraviolet spectrum (or electrical energy for an electroluminescent, chemical reaction for a chemoluminescent) is converted to an output of radiation energy in the visible spectrum.

===== Photovoltaics =====
an input of radiation energy from the visible spectrum produces an electricalenergy (the term voltaic refers more to the material which must be able to provide the voltage potential to sustain the current).

===== Thermoelectrics =====
an input of electrical current creates a temperature differential on opposite sides of the material. This temperature differential produces a heat engine, essentially a heat pump, allowing thermal energy to be transferred from one junction to the other.

===== Piezoelectrics =====
elastic energy (strain) produces an electricity. Mostly, Inputs can be switched and an applied electric energy will produce a deformation (strain).

===== Electrostrictive=====
Shape changes  under the application of an electric field.





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[[Category:Material]][[Category:Classification]]