Table 4 Combined weighting results.

From: LCD-AHP-TRIZ methodology enhances low-carbon principles in smart product design

Level 1 Criterion Layer A (weights)

Level 2 Indicator Layer

Combined weights

arrange in order

Energy efficiency A1

(0.2025)

Use clean energy A 11

0.0705

2

Improvement equipment operating efficiencyA12

0.0192

24

Optimization of production process A 13

0.0350

13

 

Energy recycling A14

0.0525

5

 

Adjustment of fuel ratios A 15

0.0252

22

Design A2

(0.1649)

Digital simulation design of products A21

0.0348

14

Lightweight design of components A 22

0.0280

20

Standardized  design of parts A23

0.0296

19

Modular design of components A24

0.0378

11

Integrated product design A25

0.0327

17

Environment A3

(0.3081)

Carbon Dioxide Recovery A31

0.0613

3

Clean production A32

0.0408

10

Noise-reducing structures and material applications A33

0.0324

18

Strengthening e-waste management A 34

0.0502

7

Use of biodegradable recycled materials A35

0.0821

1

Technology A4

(0.2022)

Intelligent Security Protection Technology A 41

0.0511

6

Intelligent Repair and Diagnostic Technology A42

0.0332

16

Intelligent Operation and Interaction Technology A 43

0.0583

4

Carbon capture, separation and storage technologies A44

0.0443

9

Smart Traceability and Recycling Guide A 45

0.0375

12

Cost A5

(0.1383)

Reduce material recycling costs A51

0.0333

15

Reduce manufacturing costs  A52

0.0275

21

Reduced user costs A 53

0.0171

25

 

Reduce technology input costs A54

0.0208

23

 

Reduce recycling costs A55

0.0445

8