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dwipurnomo 4
The Four C’s of Design
CreativityRequires creation of something new
ComplexityRequires decision on many Variables and Parameters
ChoiceRequires making choices between many possibsolution
CompromiseRequires balancing multiple conflicting requirements
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Types of Design Project
Variation of Existing ProductImprovement of Existing ProductDevelopment of New Product One-of-a-Kind Design
dwipurnomo 6
Morphology of Design
1. Conceptual Design2. Embodiment Design3. Detail Design4. Planning For Manufacture5. Planning For Distribution6. Planning for Use7. Planning for Retirement of the Product
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Product Design Process
Problem Definition
-Problem Statement-Benchmarking
-QFD-PDS
-Project Planning
GatherInformation
-Internet-Patent-Trade
-Literature
ConceptGeneration
- Brainstorming- Functional
Decomposition-Morphological Chart
Evaluation ofConcept
--Pugh Concept
Selection-Decision Matrices
Parametric Design
-Robust Design -Tolerances
-Final Dimension-DFM
ConfigurationDesign
-Prelim. SelectionMaterials and
Manufacturing-Modeling/sizing of
part
Product Architecture
- Arrangement ofPhysical Elements
to Carry outFunction
Detail Design
- Detail Drawing sand
Specifications
Conceptual Design
Embodiment Design
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Identifying Customer Needs
Gathering Information From Customers
Interview, Focus Group, Customer Survey, and Customer Complaint
Constructing Survey InstrumentEvaluating Customer Needs
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Dimension of Quality for Manufactured Product
PerformanceFeatures
ReliabilityDurability
ServiceabilityConformance
AestheticsPerceived Quality
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Customer RequirementsExpected
There are basic attributes that one would expect to see in the product
SpokenThere are specific features that customer defines the product in terms of these attributes that one would expect to see in the product
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Customer RequirementsUnspoken
These Are Specific Features That Customers Say They Want in the Product.
ExcitersThese Are Product Features That Make the Product Unique and Distinguish It From the Competition
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Quality Function Deployment
A Planning and Problem Solving Tool for Translating Customer Requirements Into the Engineering Characteristics of Product ( Engineering Parameters)
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5Correlation Matrix
4Engineering Characteristic
6Relationship Matrix
7. Absolute Importance8. Relative Importance
9. Technical Competitive Assessment
10. Technical Difficulty11. Target Value
1CustomerReq’ment
“What?”
2CompetitiveAssessment
3Impor-tance
Rating
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Conceptual Design
Process by which the design is initiated, carried to the point of creating a number of possible solution, and
narrowed down to a single best concept
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Product Design Specification
A Document Which Contains All of the Facts Related to the Outcome
of the Product Development
In Use Purpose and MarketFunctional Requirements
Corporate ConstraintSocial, Political, and Legal
Requirements
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Process Planning
Planning of production processes based on
the product design starting from raw
material in to finish good
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Operation Process Chart
Chart describe the operation making process from the beginning ( material
input) to the finish (finished good)ASME symbol:
OperationInspectionOperation and InspectionStorageFlow
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Operation Process Chart
5
4
3
2
1•Cutting•Circular Saw
•Forming•Press
•Make Screw•Drilling
•Cutting•Circular Saw•Polishing•Grinding
•Painting•Sprayer
7 •Make Screw•Drilling
6
I-1
I-218
•Assembly & Inspection
•Mannual
5’
3’
10’
2’
3’
15’
5’
15’
Plywood Pipe
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PERANCANGAN SISTEMAnalisis Permintaan
Perancangan Produk Dan Proses
Penentuan Kapasitas
Penentuan Lokasi
Perancangan Lay Out
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Analisis PermintaanAnalisis Peluang Pasar
Proyeksi Demand Potential (Do)
Market Share ( S )
Proyeksi Demand Effektif (De )De = S.Do
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Sumber PeluangThe UnexpectedThe IncongruityProcess NeedChange
Struktur Industri dan struktur pasarDemografiPersepsi, “mood” dan makna
New Knowledge
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Prinsip InovasiDimulai Dengan Analisis PeluangBersifat Konseptual Dan PerseptualSederhana Dan TerpusatMulai Dengan Yang KecilDitujukan Untuk Menjadi Leader
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Persyaratan
Berorientasi Pada PasarBekerja Hanya Pada Satu BidangSajaMembangun BerdasarkanKekuatan Sendiri
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Demand PotentialTotalitas permintaan produk/jasatanpa memperhatikan siapa yang
akan memasok
Market Size
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Demand EffectiveJumlah permintaan produk/jasa
yang diminta konsumen yang dapat diraih oleh pemasok tertentu
Merupakan bagian daridemand potential
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Analisis Market ShareAnalisis Persaingan
5 Forces ( Porter )SubstituteSupplierBuyerNew EntranceCompetitor
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Pengertian KapasitasKapasitas Adalah Kemampuan Maksimum
Dari Suatu Fasilitas Persatuan Waktu
Design(Co) Effektif(Ce) Aktual(Ca)( Designer ) ( Planner ) ( Executor)
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Langkah Perhitungan CoDemand Effective
Kapasitas Effektif
Strategi Kapasitas
Kapasitas Design
Loses (L)
Effisiensi (E)
CCR ( R )
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Kapasitas Effektif
Ce = De/(1-L)
Dimana L: loses karena- Kerusakan di gudang- Kerusakan transportasi- Waranty- Sales program
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Policy A : Capacity leads demand
Policy B : Capacity in approximate with demand
Policy C : Capacity legs demand
Capacity DemandsUnits
Time
Time
Time
Units
Units
Capacity
Demands
Demands
Capacity
Strategi Kapasitas
dwipurnomo 35
Capacity Cushion Ratio
R = ( Cx – Cs )/Cx
Dimana:R : Capacity Cushion RatioCx : Marginal ProfitCs : Marginal Production